RRB JE CBT 1 - Full Test 10 - Railways MCQ

According to the question,

1) O gets the lowest grade among them.

2) Number of peoples having higher grade than K and number of peoples having lower grade than K are equal.

3) G does not get highest grade but his grade is better than K.

4) F neither got highest nor lowest grade.

Which means, F got grade B, and P got grade E.

Thus F got grade B.

• Challachitram National Film Festival was held in March with a special award for entries from the northeastern region.
• The theme of the festival was 'Our Heritage, Our Pride'.
• Entries for animation films, short films, and documentaries had been invited for both the competitive and non-competitive sections.

SI unit of Work is Joule.

Similarly SI unit of Inductance is Henry.

Thus Inductance is related to Henry.

For an odd number of terms of an AP always take the middle term as a and other terms on either side with a common difference d.

Let the three numbers in A.P. be

(a – d), a & (a + d)

Given (a – d) + a + (a + d) = 18 or 3a = 18

∴ a = 6                   …(i)

Further (a – d)² + a² + (a + d)² = 158

⇒ 3a² + 2d² = 158

⇒ 2d² = 158 – 3 × 36

⇒ d² = 25 or d = ± 5

Then, the numbers are 1, 6, 11.

Thus, the greatest number is 11.

• The conservation of species in their natural habitats is known as In situ conservation. It is considered the most appropriate way to conserve biodiversity.
• The conservation of components of biodiversity outside their natural habitats is known as Ex situ conservation. 

Talking about the 1^st row, 5^th column element is obtained by multiplying 1^st column by 3^rd column then adding by 4^th column and then subtracting it by 2^nd column.

18 × 3 + 1 – 5 = 54 + 1 – 5 → 50

Similarly for 3^rd row

20 × 4 + 5 – 30 = 80 + 5 – 30 → 55

So for 2^nd row,

12 × ? + 2 – 50 = 24

12 × ? = 72

? = 72/12

= 6

Hence, “6” is the correct answer.

When two ice cubes are pressed together, the surface pressure temporarily decreases the melting point of the top layer of ice. This top layer melts and as soon as the pressure is released, the molten ice (water) freezes back into ice due to the low temperature of surrounding molecules and this effectively forms a kind of water weld between the ice cubes.

According to the question,

Case-1

Case-2

Hence from the above arrangements, car owner’s brother is either father or uncle of Mr. X.

The Psophometer measures AF(Audio Frequency) signal level and noise.

The given information can be represented as,

Hence, the word ‘appropriated’ is coded as ‘pft’.

Quantity of water in 300 ml of mixture = [x/(x + 1)] × 300

When 50 ml of water is mixed in the mixture, ratio of acid and water becomes 2 ∶ 5

⇒ Quantity of water in in the new mixture = 5/7 × (300 + 50)

⇒ (x/x + 1) × 300 + 50 = 5/7 × (300 + 50)

⇒ (x/x + 1) × 300 = 200

⇒ (x/x + 1) = 2/3

∴ x = 2

The pattern followed here is as follows,

1171 + (11)² = 1171 + 121 = 1292;

1292 + (10)² = 1292 + 100 = 1392;

1392 + (9)² = 1392 + 81 = 1473;

1473 + (8)² = 1473 + 64 = 1537;

1537 + (7)² = 1537 + 49 = 1586;

1586 + (6)² = 1586 + 36 = 1622

1622 + (5)² = 1622 + 25 = 1647;

1647 + (4)² = 1647 + 16 = 1663

Thus the missing numbers are 1392, 1537, 1622.

• The aerosol is the suspension of particles in the air & atmosphere.
• They have both human-made and natural sources.
• Aerosol particles form during combustion or other industrial processes in factories and car engines, from burning biomass (such as trees and brush) to clear land for agriculture, and even in cooking fires.

Covalent bonds are formed by atoms sharing electrons to form bonds that hold the atoms together in a molecule. This type of bond usually formed between two non–metallic elements. Nitrogen, being a non-metal, has 5 electrons is its outer shell. So to make the atom count 8 in order to get stabilized, 2 nitrogen atom would share 3 atoms each with each another, thus forming 3 pairs. These bonds which are then formed are known triple covalent bond.

Let the number be = 16k + 4 (where k is positive integer.)

Square of the number = (16k + 4)² = 256k² + 16 + 128k

Now, we have to find the remainder when the above number is divided by 16.

We will see the reminder of each term when it is divided by 4.

Since 256k² and 128k will give the remainder 0 and 16 will give the remainder 0 when divided by 4.

So the required remainder = 0 + 0 + 0 = 0

As,

100 × 100 = 10000

So, the square of any three-digit number is of 5 digit or more

⇒ 99 × 99 = 9801

So, 9801 is the largest 4-digit perfect square

Here the vertical arrows changes direction in every next step, whereas the inclined lines forms mirror image in each step. The bidirectional arrow rotates 90 degree in clockwise direction in each step.

Hence, the above image will be the next image of the given series.

Let, side of cube at first = x

∴ Volume of the cube at first = x³

∴ side of the cube now = x + x × 10/100 = 1.1x

∴ Volume of the cube now = (1.1x)³ = 1.1331x

∴ percentage increase in the volume of the cube,

⇒ 0.331 × 100%

⇒ 33.1%

CICR is headquartered in Nagpur, Maharashtra. It was established in April 1976. On March 15 scientists from the organisation has developed what is reported to be the shortest-duration cotton variety in the world. Requiring only 100-120 days for maturity, the new variety could emerge as the solution to the problems of dryland cotton farmers in regions like Vidarbha and Telangana.

Net percentage of SI in 2 years = 13 + 13 = 26%

Net percentage of CI in 2 years = 13 + 13 + (13 × 13)/100 = 27.69%

According to question

CI + SI = 26 + 27.69 = 53.69

⇒ 53.69 unit = Rs. 5369

⇒ 100 unit = 5369/53.69 × 100 = Rs. 10,000

∵ An equal sum is invested in two different schemes

⇒ Total sum = 2 × 10,000 = Rs. 20,000

LCM of fractions = LCM of numerators/HCF of denominators

LCM of Numerators = LCM of 7 and 9 = 63

HCF of Denominators = HCF of 5 and 25 = 5

∴ LCM of (7/5) and (9/25) = 63/5

• Bradley Cooper was awarded the ‘Oscat’ by People for the Ethical Treatment of Animals (PETA).
• The animal rights organisation awarded the best director award to Cooper for his enlightened decision to cast his own canine companion in ‘A Star Is Born’.
• PETA is an American animal rights organisation based in Norfolk, Virginia, and led by Ingrid Newkirk, its international president.

We know that,

(x + y + z)² = x² + y² + z² + 2(xy + yz + zx)

Now, substituting the value we have,

⇒ 6² = x² + y² + z² + 2(10)

⇒ 36 = x² + y² + z² + 20

⇒ x² + y² + z² = 16

We know that,

a³ + b³ + c³ = (a + b + c)(a² + b² + c² – ab – bc – ac) + 3abc

So,

⇒ x³ + y³ + z³ – 3xyz = (x + y + z){x² + y² + z² – (xy + yz + zx)}

Now, substituting the values we have,

⇒ x³ + y³ + z³ – 3xyz = 6 × (16 – 10) = 6 × 6 = 36

Statement I: Medicines today have become an integral part of everyone’s life.

Statement II. People undergo medicinal treatment at any age.

Conclusion I:

Lifestyle has made us easy going and less caring for health → It does not follow from any of the given statements.

Conclusion II:

Medicines have become a compulsory part of one’s life → 'Integral' does not mean 'compulsory', hence conclusion 2 does not follow.

Hence neither of the conclusions follow. 

In JFTNC : OAYIH,

Similarly for LSHVM,

Thus LSHVM is related to QNMQR.

Biotic components comprise of living things that contribute in the formation of an ecosystem. These include animals, humans, plants, microorganisms etc.

Abiotic components include non-living parts of the ecosystem such as light, water, air, soil etc.

The correct answer is option 1. Only argument I is strong. 

The first argument states that if lights are switched off after midnight, then it can result in increased crime and accidents, thus it is a strong argument as it has a direct impact on life of people.

Argument II, in comparison with argument I, is weaker as there are other ways to save electricity, such as switching to more efficient sources, managing the usage of electricity, etc. Switching off streetlights after midnight will increase the risk to human lives which cannot be allowed. Thus, argument II is not strong.

3709, 5147, and 2671 all are prime numbers whereas 3171 is not.

Thus 3171 is the odd number.

Avogadro’s Law states that at constant temperature and pressure, all equal volume of gases will have an equal number of molecules" which means 'V' is directly proportional to the 'Number of molecules'.

Following the BODMAS rule,

1) ×, ÷, +, - → 130 × 15 ÷ 20 + 10 - 2 = 105.5 ≠ 45

2) ÷, ×, +, - → 130 ÷ 15 × 20 + 10 - 2 = 181.33 ≠ 45

3) +, -, ×, ÷ → 130 + 15 - 20 × 10 ÷ 2 = 45

4) -, ÷, ×, + → 130 - 15 ÷ 20 × 10 + 2 = 124.5 ≠ 45

Hence, “+, -, ×, ÷” is the correct answer.