RRB JE ME (CBT I) Mock Test- 1
100 Questions MCQ Test RRB JE Mock Test Series for Mechanical Engineering (ME) | RRB JE ME (CBT I) Mock Test- 1
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Two trains, 165 m and 175 m long run at the speed of 50 km/h and 52 km/h respectively in opposite directions on parallel tracks. What is the time (in seconds) they take to cross each other?
Distance covered in crossing each other = (165 + 175) = 340 m.
∴ Required time = (340 x 9/255) = 12 s.
If two equations: 2x2 - Ax - 20 = 0 and 2x2 - 11x + 12 = 0 have one root in common, then what is the value of 'A' if the value of A is positive?
(2x - 3)(x - 4) = 0
x = 1.5 and 4
Since both the equations have one root in common-
Case 1: When x = 1.5 is common-
2(1.5)2 - A(1.5) - 20 = 0
Divya has 3 types of coins having denomination of 20p, 10p and 5p. Their numbers are in the ratio of 1: 2 : 3. If Divya has total money of Rs. 44 then how many 5p coins are there?
So let us assume the number of 20p coins = a
Then the number of 10p coins is 2a and the number of 5p coins is 3a.
Total worth of 20p coins = number of coins X worth of each coin = a X (1/5) = Rs (a/5)
Total worth of 10p coins = 2a X (1/10) = Rs (a/5)
Similarly total worth of 5p coins = 3a X (1/20) = Rs (3a/20)
Since total money with the Divya is Rs 44 hence
a/5 + a/5 + 3a/20 = 44 => 2a/5 + 3a/20 = 44
=> 8a/20 + 3a/20 = 44 => 11a/20 = 44 => a = 80
So the number of 5p coins = 3a = 80 x 3 = 240
The difference between 42% and 23% of a number is 304. What is 72% of that number?
∴ 42x - 23x = 304 => 19x = 304 => x = 16
∴ The number is 100 x 16 = 1600.
=> 72% of the number = 0.72 x 1600 = 1152
What is the value of 60 ÷ [{21 ÷ 7 x √(√625 + √121)} − 6] x 5 - 42 ÷ 3 x 2 = ?
= 60 ÷ [{3 x √(25 + 11)} − 6] x 5 - 14 x 2
= 60 ÷ [{3 x √(36)} − 6] x 5 - 28
= 60 ÷ [{3 x 6} − 6] x 5 - 28
= 60 ÷ [18 − 6] x 5 - 28
= 60 ÷ 12 x 5 - 28
= 5 x 5 - 28
= -3
Three pipes x, y and z can fill a water tanker in 20, 25 and 30 minutes respectively. All the three pipes are opened to fill the tanker, and if the pipe y is closed 2 minutes before the water tanker gets filled, then in how much time will the tank get filled?
In one minute, pipe x can fill 1/20 part.
In t minutes, pipe x can then fill the t/20 part.
Therefore, t/20 + t - 2/25 + t/30 = 1
On solving, we get t = 324/37 minutes.
If [4x - (1/12x) = 8], then what is the value of [x2 + { /(2304 x 2)}]?
=> 4(x - 1/48x) = 8
=> x - 1/48x = 2 ------ (i)
Squaring both sides, we get
(x - 1/48x)2 = 4
=> x2 + 1/(2304x2) - 2x/48x = 4 ------ [(a - b)2]
= a2 + b2 - 2ab] x2 + 1/2304 x2
= 4 + 1/24 = 97/24
A boy throws a ball of mass 4 kg vertically downwards for a height of 20 metres. What is the velocity of the ball which touches the ground? (Take g= 10 m/s2)
Mass of ball = m = 4 kg, elevation from ground = h = 20 m; v = velocity at touch point
So, mgh = ½ (mv2)
Gives v = 20 m/s
mg = 1/2 (mv2)
2gh = v2
v2 = 2 x 10 x 20 = 400
v = 20 m/sec
=> 100x = 78.414141.. (I)
=> 10000x = 7841.414141.. (II)
(II) - (I) gives, 9900x = 7763
=> x = 7763/9900
Nidhi borrowed Rs. 10000 from a bank for two years at the rate of 10% per annum. From that amount, she invested Rs. 3500 in another bank which offers simple interest @12.5% per annum, and the remaining amount she invested into a chit fund which offers compound interest of 10% per annum. What is the profit obtained by Nidhi at the end of two years?
Interest obtained by Nidhi from the bank = Rs. (3500 x 2 x 12.5)/100 = Rs. 875
Interest obtained by Nidhi from Chit fund = 6500(1 + 0.1)2 - 6500 = Rs. 1365
So total interest obtained by Nidhi = Rs. (875 + 1365) = Rs. 2240
Profit = Rs. (2240 - 2000) = Rs. 240
A book was marked initially at Rs. 500 which A purchased at 8% discount. He marked up the price by 15% on his purchased price and sold after Rs. 20 discount to B. B marked up the price by 20% above his purchased price and sold to C after allowing Rs. 50.9 discount. What is the percent profit gained by B when sold to C?
Given below are the steps involved. Arrange them in sequential order.
(A) Initial marked price of book = Rs. 500 and purchased price for A = 92% of 500 = Rs. 460
(B) Purchased price of book by B = 529 - 20 = Rs. 509
(C) Per cent profit = [(559.9 - 509)/509] x 100 = 10%
(D) Marked price of book by A = 115% of 460 = Rs. 529
(E) Marked price of book by B = 120% of 509 = Rs. 610.8 and purchased price of book by C = 610.8 - 50.9 = Rs. 559.9
(A) Initial marked price of book = Rs. 500 and purchased price for A = 92% of 500 = Rs. 460
(D) Marked price of book by A = 115% of 460 = Rs. 529
(B) Purchased price of book by B = 529 - 20 = Rs. 509
(E) Marked price of book by B = 120% of 509 = Rs. 610.8 and purchased price of book by C = 610.8 - 50.9 = Rs. 559.9
(C) Per cent profit = [(559.9 - 509)/509] x 100 = 10%
Seema purchased an item for Rs.9,600 and sold it for a loss of 5 percent. From that money, she bought another item and sold it for a gain of 5 percent. What is her overall gain/ loss?
SP = 9600 x 95/100 = Rs.9,120
Second S.P. = 9120 x 105/100 = Rs.9,576
Loss = 9600 - 9576 = 24
What is the angle between the hands of a clock at 8:30 a.m.?
So these two hands are apart by 2.5 blocks.
We know that the difference in angle of one block is 30°.
Hence the angle between the hands = 2.5 X 30° = 75°
Following data given below shows the sex ratio of India in the last 10 years. Find the mode of sex ratio in India.
976, 979, 1084, 993, 1084, 993, 935, 979, 991, 979
Since 979 is frequently occurring, and the number of occurrence of 979 is 3.
Hence the mode of sex ratio in India in the last 10 years is 979.
If 7x5 - 2x4 + 3x3 - 4x2 + 6x + 2k is divisible by (x + 1), then what is the value of k?
=> x = -1 must satisfy the given equation
=> 7(-1)5 - 2(-1)4 + 3(-1)3 - 4(-1)2 + 6(-1) + 2k = 0
=> -7 - 2 - 3 - 4 - 6 + 2k = 0
=> 2k = 22
=> k = 11
The ratio of two numbers is 7:5, and their H.C.F. is 6. What is their L.C.M.?
∴ Their H.C.F. = x = 6 (given).
=> The numbers are 42 and 30.
L.C.M. of 42 and 30 = 210.
From an external point O, a secant is drawn on a circle that meets the circle at points A and B, respectively, if OA = 4 cm and AB = 60 cm. The length of the tangent drawn on the circle from point O is (in cm)
Let the tangent be T
OT2 = OA.OB
=> OA = 4
=> OB = OA + AB
=> 4 + 60
=> 64
OT2 = 4 x 64
=> 256
=> OT = 16 cm
A copper wire, when bent in the form of a square, enclose an area of 121 cm2. If the same wire is bent in the form of a circle, then the area of the circle is
Length of wire = circumference of circle.
44 = 2 πr or r = (44 x 7)/(2 x 22) = 7 cm
Hence, area of circle = πr2 = 22/7 x 7 x 7 = 154 cm2
Table given below shows the total number of employees of four different grades in a department and the average age of employees in those different grades.
The table given below shows the total number of employees of four different grades in a department and the average age of employees in those different grades.
Sum of ages of all employees in grade B = 40 x 24 = 960 years
Sum of ages of all employees in grade C = 15 x 32 = 480 years
Sum of ages of all employees in grade D = 20 x 22 = 440 years
Sum of ages of all the employees of the department P = 700 + 960 + 480 + 440 = 2580 years
Total employees in department P = 25 + 40 + 15 + 20 = 100
Average age of the employees of department P = 2580/100 = 25.8 years
What will be the percentage profit after selling an article at a certain price if there is a loss of 12.5% when the article is sold at half of the previous selling price?
Selling price = Rs. x/2
There is a loss of 12.5% when the selling price is Rs. x/2.
Cost Price = x/2 x 100/(100 - 12.5) = (100 x)/175 = 4x/7
Now, when selling price is Rs. x, % profit = [(x - (4x/7))/(4x/7)] x 100 = (3x/4x) x 100 = 75%
If α, 3α+6, and 71α are in arithmetic progression, then find the value of α.
=> 3α + 6 - α = 71α - 3α - 6 = common difference of the arithmetic progression.
=> 2α = 68α - 6 - 6
=> 66α = 12
=> α = 12/66 = 2/11
One-fourth of Lainey's savings in Kisan Vikas Patra is equal to one-fifth of her savings in the Employee Provident Fund. How much has she saved in Employee Provident Fund if she has a total savings of ₹ 180,000?
∴ Her savings in Kisan Vikas Patra = ₹ (180,000 - x)
∴ (180,000 - x)/4 = x/5
=> 900,000 - 5x = 4x
=> x = ₹ 100,000
When 20% of 40% of half of a number 'm' is added to 3/4th of 20% of itself, then a second number is obtained, which is 21 less than the 40% of m. What is the difference between the first and second number?
Second number = (40% of m ) - 21
According to the question:
20% of 40% of (m/2) + (3/4) x 20% of m = (40% of m) - 21
m = 100
Second number = (40% of m) - 21 = 40% of 100 - 21 = 19
Difference = 100 - 19 = 81
What will come in place of (?) in this equation?
125% of [{? + 200 ÷ (16 ÷ 2 x 4 x (1/8))} ÷ 7.5 x 8 ÷ (18 ÷ 3 - 50% of 4)] = ?
125% of [{a + 200 ÷ (16 ÷ 2 x 4 x (1/8))} ÷ 7.5 x 8 ÷ (18 ÷ 3 - 50% of 4)] = a
=> 125% of [{a + 200 ÷ (8 x 4 x (1/8))} ÷ 7.5 x 8 ÷ (6 - 2)] = a
=> 125% of [{a + 200 ÷ 4} ÷ 7.5 x 8 ÷ 4] = a
=> 125% of [{a + 50} ÷ 7.5 x 2] = a => 125% of 2(a + 50)/7.5 = a
=> (5/4) x 2(a + 50)/7.5 = a
=> a + 50 = 3a
=> a = 25
If cos (900 - θ)/cos (300 + θ) = 1, then the value of sin θ + cos 2θ
sin θ = cos (300 + θ)
sin θ = sin (900 - 300 - θ)
θ = 900 - 300 - θ
θ = 300
= (sin θ + cos 2θ)
= sin 300 + cos 600
= 1/2 + 1/2
= 1
A fraction is such that if it is squared and then the numerator is divided by 2, while the denominator is increased by 25%, the new fraction thus obtained is 4 times the original fraction. What is the new fraction?
According to the given condition,
What should come in place of question mark (?) in the following series?
15, 17, 23, 35, 55, (?)
17 + (2 x 3) = 23
23 + (3 x 4) = 35
35 + (4 x 5) = 55
55 + (5 x 6) = 85
How much does a watch lose per day if its hands coincide every 65 minutes?
Hence loss in 65 minutes = 65(5/11) - 65 = (5/11) minutes
Hence loss in 24 hours = (5 x 24 x 60) / (11 x 65) = 10(10/143) minutes
After fifteen years, the ratio of the ages of a man and his son will be 2: 1. If the present age of the man is 45, then what is his son's present age?
Let the present age of the son be 'x'.
(45 + 15)/(x + 15) = 2/1
2x + 30 = 60 x = 15
So, the present age of son is 15 years
Ramesh can do 20% more work as Mohan can do at the same time. If Mohan can finish the work in 30 hours, then Ramesh, with the help of Mohan, can finish the same work in how many hours?
Ramesh can do 6/5 work in 30 hours.
So Ramesh can complete the work in 30 x (5/6) = 25 hours.
Together they can finish 1/30 + 1/25 of work in 1 hour, i.e., 11/150.
So in 150/11 hours, they will finish the work together.
In the following question, select the related word from the given alternatives.
PARTS: STRAP:: WOLF:?
similarly,
DIRECTIONS: In the question below, there are few statements followed by few conclusions. You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusion logically follow(s) from the given statements.
Statements: All books are pins.
Some pins are desks.
Conclusions: I. Some desks are books.
II. All desks are pins.
III. No desk is book.
DIRECTIONS: Read the following information carefully and answer the questions given below it.
‘X + Y’ means ‘X is the father of Y’.
‘X – Y’ means ‘X is the mother of Y.’
‘X x Y’ means ‘X is the brother of Y.’
‘X ÷ Y’ means ‘X is the sister of Y’.
Which of the following symbols should replace the question mark in the given expression in order to make the relation ‘P is the niece of M’ definitely true?
M x N ? R – P÷S
M and R must be siblings. So, their intermediary sibling N should be either a brother or a sister of both. Therefore, either x or ÷ can be placed.
DIRECTIONS: In the question below, there are few statements followed by few conclusions. You have to take the given statements to be true even if they seem to be at variance with commonly known facts and then decide which of the given conclusion logically follow(s) from the given statements.
Statements: All books are pins.
Some pins are desks.
Conclusions: I. Some desks are books.
II. All desks are pins.
III. No desk is book.
DIRECTIONS: In the questions given below, some relationship has been expressed through symbols as shown below. Based on the meaning of these symbols and choose the correct answer.
ϕ means ‘less than.’
Δ means ‘not greater than.’
- means ‘equal to.’
+ means ‘not equal to.’
× means ‘not less than.’
= means ‘greater than.’
X ϕ Y + Z implies
X ϕ Y + Z ⇒ X < Y ≠ Z
Using the proper notations/symbols in option (c), we get
X △ Y ϕ Z
⇒ X< Y< Z.
⇒ X< Y ≠ Z.
Therefore, X ϕ Y + Z = X △ Y < ϕ Z.
DIRECTIONS: In the following question, continuous pattern series is given. Some of the letters of the series are missing. These missing letters are given in that order as one of the four alternatives below the series. Find out the correct alternatives.
jk_ljkk_ljj_klljk_ljk_ll
jkkl/jkkll/jjkkll/jkkl/jkkll
∴ Required answer = klkkk
Roy walks 2 km to the East, then turns North-West and walks 3 km. Then he turns South and walks 5 km. Then again, he turns West and walks 2 km. Finally, he turns North and walks 6 km. In which direction is he from the starting point?
Now Roy is in the North-west direction from starting point.
If’ A’ is coded as 1, ‘B’ as 3, ‘C’ as 5 and so on, which of the following is the numerical value of the word ‘FAZED’?
So from the above table, numerical value of FAZED= 11 +1 + 51 + 9 + 7 =79.
If ‘MATCH’ is coded as ‘NCWGM’ and ‘BOX’ as ‘CQA’, then which of the following is coded as ‘OQWIGUVS’?
In the question, which one of the given choices would be a meaningful order of the following words?
1. Bibliography
2. Contents
3. Title
4. Chapters
5. Introduction
2. Contents "Because it shows what is in the book".
5. Introduction "Because it introduces the book".
4. Chapters "Because after the introduction we go on to read the chapters".
1. Bibliography "Because this lists the references of the content at the end."
A word is represented by only one sequence of numbers as given in any one of the alternatives. The sets of numbers given in the alternatives are represented by two classes of alphabets as in the two matrices given below. The columns and rows of Matrix – I are numbered from 0 to 3, and that Matrix – II are numbered from 4 to 7. A letter from these matrices can be represented first by its row and next by its column. e.g., ‘A’ can be represented by 00, 12 etc., and ‘L’ can be represented by 46, 54, 67 etc. Similarly, You have to identify the set for the word given below. “TUBULE”
Possible code for T: 02/10/23/31
Possible code for U: 47/55/64/76
Possible code for B: 45/57/66/74
Possible code for L: 46/54/67/75
Possible code for E: 44/56/65/77
Hence, the code for TUBULE = 31, 76, 57, 47, 67, 56
DIRECTIONS: Choose the missing terms out of the given alternatives.
QPO, SRQ UTS, WVU,?
Therefore, the missing group of letters = YXW.
= 9 : 81 :: 12 : 144.
DIRECTIONS: A piece of paper is opened after being cut, as shown below in the questions figure. From the given answer figures, indicate how it will appear when closed?
DIRECTIONS: Choose the missing terms out of the given alternatives.
B M f q J U ? ?.
Therefore, missing letters =
DIRECTIONS: Find out missing number from the following given figures.
15 + 4 = 19
In figure II = 3 x 8 = 24,
3 + 8 = 11
Then missing number is = 10 × 4
= 40
The given alternative choose the one that is different from the other three alternatives.
DIRECTIONS: Select from answer choices a number to replace the question mark.
(8 × 2) – 5 = 11
(12 × 2) – 11 = 13
So,
(7 × 2) – 6 = 8
Choose the correct water image of the figure from responses given below?
Question Figure:
Answer Figures:
A, B, C, D, E, F and G are members of a family consisting of 4 adults and 3 children, two of whom, F and G, are girls. A and D are brothers, and A is a doctor. E is an engineer married to one of the brothers and has two children. B is married to D, and G is their child. Who is C?
Clearly, C and F are the remaining members to be adjusted in place of two x. since there are 3 children out of which two are girls, i.e. G and F, so clearly the third children C, is a boy. So C is the son of E and A.
DIRECTIONS: Study the following diagram and answer the questions that follow.
a. The rectangle represents men.
b. Circle represents graduates.
c. Triangle represents skilled persons.
d. Square represents employed persons.
The skilled employed men who are not graduates are-
Three of the following four are alike in a certain way, and so form a group. Which is the one that does not belong to that group?
DIRECTIONS: Arrange the following words according to the English dictionary.
(a) Assistant
(b) Assessment
(c) Asbestos
(d) Asterisk
(e) Ass
(c) Asbestos
(e) Ass
(b) Assessment
(a) Assistant
(d) Asterisk
Kannan walked 10 km towards North. From there, he turned back and walked 6 km towards South. Then he walked 3 km towards East. How far was he from the starting point?
From the figure, its clear that Kannan is 5 Km from the starting point.
DIRECTIONS: Choose the odd one out from the given alternatives.
2023 ICC Cricket World Cup will be hosted completely in which of the following countries?
In each of the following questions, select a figure from amongst the four alternatives, which, when placed in the blank space of figure (X), would complete the pattern.
Identify the figure that completes the pattern.
Tughlaqabad, a ruined fort situated in Delhi, was built by Ghiyas-ud-din Tughlaq, the founder of the Tughlaq dynasty of the Delhi Sultanate.
Wrestler Vinesh Phogat has become the first Indian women athlete to win the gold medal at the Asian Games 2018 held in Jakarta, Indonesia. She hails from:
The upcoming General Elections to be held in 2019 will lead to the formation of the _________ Lok Sabha for the Republic of India.
The General elections of 2019 will elect members for the formation of the 17th Lok Sabha.
Headquarters of the Indian Space Research Organisation is in _________________
The Indian Space Research Organisation is the space agency of the Government of India headquartered in Bengaluru.
It was founded in 1969 by Dr Vikram Sarabhai.
Its current Chairman is K Sivan.
"Hampi ruins" is the Heritage architecturally important monumental site in India which is situated in which Indian state?
Hampi monuments are a subset of the wider-spread Vijayanagar ruins situated in the Indian state of Karnataka.
It is designated as a UNESCO world heritage site.
________________ is a security force of India entrusted with protecting railway passengers, passenger area and railway property of the Indian Railways
Under the Authority of the Ministry of Railways, Railway Police Force (RPF) has the power to arrest, investigate and prosecute criminals.
Its duty is towards protecting railway passengers, passenger area and railway property of the Indian Railways.
Government of India launched ____________ mobile App for Freight Managers which provides features for monitoring and managing freight business using Geographic Information System (GIS) Views and Dashboard.
The Ranji Trophy is a domestic first-class cricket championship played in India between teams representing regional and state cricket associations.
The competition currently consists of 37 teams, with all 29 states in India and two of the seven union territories having at least one representation.
2 + 2 Ministerial Dialogue is a Bilateral diplomatic conference between India and __________
2 + 2 Ministerial Dialogue is a Bilateral Annual conference between the USA and India.
It was conceptualised in 2017 following the Official visit of PM Modi to the United States.
The dialogue pans a wide range of Strategic issues, including Defence, Economy, Trade etc.
The first railway on Indian sub-continent ran over a stretch of 21 miles from __________ to _____________ in the 19th century
Asia's first railway train chugged out from Bori Bunder, Bombay and reached faraway Tannah (today's Thane) on April 16, 1853.
Headquartered in New Delhi, today, the Indian Railway manages the fourth-largest railway network in the world by size, with 121,407 kilometres of total track over a 67,368-kilometre route.
Indian economy is expected to grow at ______ in 2018-19 according to the Central Statistics Office.
Time period of a pendulum depends on which of the following?
The time period of a pendulum is directly proportional to the length of the pendulum and inversely proportional to the acceleration due to gravity.
if the length is increases, time period increases and vice-versa &
If acceleration due to gravity is increased, the time period decreased and vice-versa
Which of the following are the ores from which iron is extracted industrially?
Haematite and Magnetite are the chief ores of iron extraction industrially. Haematite: Fe2O3; Magnetite: Fe3O4
Iron ore is the main ingredient used in Steel producing industries.
India is the 4th largest iron ore producing country in the world. The states where iron ores are chiefly extracted for industrial purposes are- Orissa, Karnataka, Chhattisgarh, Goa and Jharkhand.
Find the distance travelled by a body moving with an initial velocity of 15 m/s and constant acceleration of 3 m/s2 in the time period of 15 seconds from the point of the initial velocity.
S = ut +1/2at2 where, S = distance travelled, u = initial velocity, a = acceleration, t = time taken for body to travel distance s.
u = 0 m/s, a = 3 m/s2, t = 15 s;
Putting the values in the equation, S = ut +1/2at2
S = 4 x 15 + ½ (3 x 15 x 15)
or S = 60 + 337.50
or S = 397.50 m
____________ is the study of animals and their characteristics while ____________ is the study of plants and its nature.
Zoology is the scientific study of animals and their characteristics, while Botany is studying plants and their nature.
Botany, along with the study of plants,, also included the study of fungi and algae.
Botanical research has various applications in food and textiles industries, in modern horticulture, agriculture and forestry, plant propagation, breeding, and genetic modification.
Zoological studies deal with the structure, embryology, evolution, classification, habits, and distribution of all animals, both living and extinct.
Which of the following involves delivering powerful waves of energy to disrupt the ability of cancer cells to grow and divide?
Radiation therapy involves powerful waves of energy delivered in small doses to disrupt the ability of cancer cells to grow and divide, killing cancer cells or even slowing their growth and shrinking tumours to enable surgery on the affected part.
Radiation Therapy is performed to have a targeted, powerful effect on tumours confined to a specific area in the body.
Which of the following are TRUE regarding the element, Tungsten?
Atomic No.- 74, Periodic Table group- 6
Tungsten is used for the filaments of incandescent light bulbs
It has the highest melting point of all metals
The melting point is 3414°C
It is a shiny, silvery-white metal extracted from its chief ores, scheelite and wolframite.
The Chemical Formulae of Benzene is C6H6. It is a colourless, flammable, aromatic hydrocarbon.
Benzene has a ring structure where all the carbon-carbon bonds in the molecule are of the same length.
Benzene is used in the manufacturing of products like plastics, resins, synthetic fibres, rubber lubricants, dyes, detergent.
In an electrical circuit, If Voltage is kept constant and Resistance is increased, the current in the circuit will_____________.
Where, V = voltage, I = Current, R = Resistance.
So, if Resistance is increased by keeping the voltage constant, the Current in the circuit will decrease.
Which of the following is/are TRUE regarding Sound waves?
Sound waves are longitudinal in nature in the air or any fluid medium in which it travels.
Sound waves are mechanical waves, so it needs medium to travel.
A mechanical wave propagates as an oscillation of matter (medium) and transfers energy through a medium.
The sound waves travelling in a medium always vibrate parallel to the direction that the wave moves.
So, no medium would render sound waves not getting propagated at all as in a vacuum.
Poise- Dynamic Viscosity
Barye- Pressure
Calorie- Heat Energy
Mojo is suffering from a common eye condition where his vision of nearby objects appears blurred. He is suffering from _____________
The cause of it happening may be genetic.
The condition of Hypermetropia can be corrected by:
Using glasses of required power
Using contact lenses for the eye
By laser Surgery of the eye
Which of the following phenomenon is responsible for the formation of a soap bubble?
The surface tension of water provides the necessary wall tension that pulls the bubbles into spherical shapes resulting in the formation of bubbles with water.
Surface tension is also responsible for the shape acquired by a liquid droplet.
Sun and other stars produce light energy due to which of the following process?
Sun and other stars produce light energy due to the Nuclear fusion reactions taking place in them.
Nuclear fusion is a process where energy is produced by combining two lighter atoms.
Hydrogen atoms in the Sun or other stars undergo Nuclear fusion to form Helium under extreme temperature and pressure.
Value of 'g', acceleration due to gravity acting on an object increases when_________.
Acceleration due to gravity increases when there is a decrease in altitude. We know that, More nearer the objects greater the gravitational force.
So, the gravitational force is inversely proportional to the distance between the two objects.
Therefore, as the altitude decrease, the distance of the object from the earth's centre also decreases, resulting in an increase in ‘g.’
Since the mass of any object is always going to be very small compared to the mass of the earth, that factor is considered negligible.
Which of the following carries the fresh oxygen-rich blood pumped in the heart to different tissues of the body?
Characteristics of Arteries in the human body are:
carry blood away from the heart to the tissues of the body
are usually positioned deeper within the body
are more muscular than veins, which helps in transporting blood that is full of oxygen efficiently to the tissues. Veins, on the other hand, carry blood from the oxygen-depleted tissues of the body back to the heart for purification.
Which of the following is a precision measuring tool?
It can be used to measure:
Outside distance such as the length of an object
Inside distance, such as the width of a groove with extreme precision.
It is a small movable scale used for obtaining fractional parts of subdivisions on a fixed main scale of any measuring instrument.
Neutralization is a type of chemical reaction where, a ___________ & a ____________ react to form a salt and water.
When a cation (positive ion) of a base form a compound with the anion (negative ion) of an acid, the salt is formed with a pH value of 7, which is a neutral value.
Example: HCL (Strong Acid) + NaOH (Strong Base) à H2O + NaCl (Salt)
Which of the following chiefly form the alloy, Bronze?
Tin is used for making the alloy harder. So, if the alloy is to be made harder for specific purposes, then the content of tin addition is more.
Bronze is used in various applications in everyday life like in Coins, Medals, sculptures or construction of a musical instrument since it has a sonorous property.
It is a practice to leave some gap between railway tracks, as they tend to expand on a _____________.
All metal objects tend to expand when they get heated due to any factor. In this case, railway tracks expand on a hot sunny day.
If two railway tracks were to be laid together without any gap between them, the push caused due to expansion against each other might lead to the derailment of tracks and cause accidents.
Newton's first law of motion gives which of the following concepts in physics?
Newton's first law of mechanics in physics states that:
An object at rest tends to stay at rest
An object in motion tends to stay in motion.
Duodenum is part of __________ in the human system.
In this part, the food from the stomach is mixed with enzymes from the pancreas and bile from the gallbladder, which breaks down the food to its simplest form for nutrient absorption.
Other parts of Small Intestine are - Ileum and Jejunum.
Who among the following is known as The Father of Homeopathy?
Samuel Hahnemann is regarded as the founder of Homoeopathy for establishing the fundamental principles of the medicinal cure through Homoeopathy.
He has pioneered the way to prepare medicines in a specialised way and prove them on healthy human beings to determine how the medicines acted to cure diseases.
He famously espoused the law of cure known as "Similia Similibus Curentur", or "Like Cures Like".
Determine the resistance value of an appliance operating at 240V and consuming power of 1200 Watts.
According to the question,
P= V2/ R or 1200 = (240 x 240)/ R
or R= 57600/ 1200
or R= 48 ohms
Mass of proton: Mass of a proton is 1.6726 x 10-27 kg.
Electron's mass is 9.1 x 10-31 kg.
____________ is a technique using sound waves which are used to map or locate objects in the surrounding environment.
Working: Firstly, a cluster of sound waves are emitted in the direction of the object. Some of the waves are bounced off, but the majority are reflected back and received by the receiver. This helps in locating objects.
This technique is already used by some species such as bats, whales, dolphins etc., in nature.
If Blossom has a deficiency of Vitamin C in her body, which of the following disease she might suffer from?
The human body cannot synthesise vitamin C on its own and depends on external dietary sources to meet its vitamin C needs.
Some of the sources for Vitamin C are: tomatoes, leafy green vegetables like Spinach, cabbage etc.
Which of the following acid is present in the stomach of the human digestive system?
Hydrochloric Acid (HCl) is present in the stomach of the human digestive system.
Hydrochloric acid helps convert pepsinogen into an enzyme called pepsin, which is essential for protein digestion in the the human body.
Pepsin breaks up the long, folded chains of amino acids into shorter and simpler structures for digestion and absorption in the human system.
Which of the following acid is present in beverages like Coca-Cola or Appy fizz?
The carbon dioxide present in such beverages forms a very weak carbonic acid (H2CO3) which causes the tingly sensation in the human tongue.
Carbon dioxide is a stable compound with covalent bonds between Carbon and Oxygen atoms.
Which of the following has a pH value greater than 7?
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