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NATA Mock Test - 3 - JEE MCQ


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30 Questions MCQ Test - NATA Mock Test - 3

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NATA Mock Test - 3 - Question 1

There are 5 bananas and 4 oranges. In how many different ways can fruits be selected if fruits of the same kind are different? (Minimum 1 fruit is selected)

Detailed Solution for NATA Mock Test - 3 - Question 1

Given that the total number of bananas is 5 and the total number of oranges is 4, we have a total of 9 fruits.
We need to select at least one fruit out of these 9 fruits. The number of ways to select at least one fruit can be calculated as:
The total number of ways to select fruits from 9 items is the sum of combinations:
9C1 + 9C2 + ... + 9C9.
The total number of ways to select fruits from 9 items is equal to the sum of all combinations, minus 1 (because we are excluding the case where no fruit is selected):
Therefore, the answer is: 29 - 1.

NATA Mock Test - 3 - Question 2

Two circles with centres A and B have diameters of measures x and 3x respectively. The two circles touch internally when the length of AB is:

Detailed Solution for NATA Mock Test - 3 - Question 2

Given: diameter of two circles are x and 3x.
Thus, the radii of the two circles are x/2 and 3x/2.
Also, given that both circles touch internally.
We know that, if two circles touch internally, then the distance between the centres is equal to the difference of their radii.
⇒ Distance between centres: AB = (3x/2 - x/2) = x
Hence, the distance between the centres of the circles is x.

NATA Mock Test - 3 - Question 3

If the angle of depression of an object from a 75 m high tower is 30°, then the distance of the object from the base of the tower is:

Detailed Solution for NATA Mock Test - 3 - Question 3

Given: Height of the tower AB = 75 m.
Angle of depression = 30°.
⇒ ∠C = 30°.
Let the distance of the object from the base of the tower be BC.
To find BC, we have:
⇒ tan(C) = AB / BC
⇒ tan(30°) = 75 / BC
⇒ 1/√3 = 75 / BC
∴ BC = 75√3 m
Hence, the distance of the object from the base of the tower is 75√3 m.

NATA Mock Test - 3 - Question 4

The value of sin⁻¹(√3/2) - sin⁻¹(1/2) is:

Detailed Solution for NATA Mock Test - 3 - Question 4

Given, sin⁻¹(√3/2) - sin⁻¹(1/2)
= π/3 - π/6
= π/6 = 30°

NATA Mock Test - 3 - Question 5

If the distance between the points (a, 2) and (3, 4) be 8, then a=

Detailed Solution for NATA Mock Test - 3 - Question 5

We know that the distance between two points (x₁, y₁) and (x₂, y₂) is given by the formula:
√[(x₁ - x₂)² + (y₁ - y₂)²]
Given that the distance between the points (a, 2) and (3, 4) is 8, we apply the distance formula:
√[(a - 3)² + (2 - 4)²] = 8
Squaring both sides:
(a - 3)² + (2 - 4)² = 8²
(a - 3)² + 4 = 64
(a - 3)² = 64 - 4 = 60
a - 3 = ±√60 = ± 2√15
a = 3 ± 2√15
Thus, the possible values of a are 3 + 2√15 and 3 - 2√15.

NATA Mock Test - 3 - Question 6

If  and  then A−B is equal to

Detailed Solution for NATA Mock Test - 3 - Question 6

We have



 

= 1/2I

NATA Mock Test - 3 - Question 7

The value of ∫ eˣ (x⁵ + 5x⁴ + 1) dx is:

Detailed Solution for NATA Mock Test - 3 - Question 7

We know, ∫ eˣ (f(x) + f'(x)) dx = eˣ f(x) + c
∫ eˣ (x⁵ + 5x⁴ + 1) dx
= ∫ eˣ (x⁵ + 5x⁴) dx + ∫ eˣ dx
= eˣ x⁵ + eˣ + c

NATA Mock Test - 3 - Question 8

The greatest integer which divides the number 101100 − 1 is:

Detailed Solution for NATA Mock Test - 3 - Question 8

To find the greatest integer which divides the number 101100 minus 1, we use the binomial expansion.

Using the binomial theorem:

So, x = n then

Now, let x = 100. So,

Clearly, 101100 − 1 is divisible by 1002

Therefore, the correct answer is: C) 10000.

NATA Mock Test - 3 - Question 9

In a Δ ABC, if ∠A = 45°, ∠B = 60°, ∠C = 75°, then a : b : c =?

Detailed Solution for NATA Mock Test - 3 - Question 9

Given that, in a ΔABC, ∠A = 45°,∠B = 60°,∠C = 75°
We know that


Thus the value a:b:c is 

NATA Mock Test - 3 - Question 10

Let  , then domain of f(x) contain the set

Detailed Solution for NATA Mock Test - 3 - Question 10

For the domain of the function



NATA Mock Test - 3 - Question 11

Which of the following is a quadratic polynomial?

Detailed Solution for NATA Mock Test - 3 - Question 11

We know that a quadratic polynomial is a polynomial of degree two, i.e., the highest exponent of the variable is two.
In general, a quadratic polynomial will be of the form p(x) = ax² + bx + c, where a ≠ 0.
Thus, clearly, x² + 2x is having degree 2.
Hence, x² + 2x is a quadratic polynomial.

NATA Mock Test - 3 - Question 12

Detailed Solution for NATA Mock Test - 3 - Question 12

Let, 
Let, x = a sin t
Differentiating both sides with respect to t, we get

This means dx = acostdt
At, 
At, 

NATA Mock Test - 3 - Question 13

Let g(x) = f(x) sin(x), where f(x) is a twice differentiable function on (−∞, ∞) such that f'(−π) = 1. Then the value of g''(−π) equals:

Detailed Solution for NATA Mock Test - 3 - Question 13

Given: g(x) = f(x) ⋅ sin(x) and f′(−π) = 1.
Using the product rule of differentiation, i.e., (uv)′ = u′v + uv′, we get:
g′(x) = f′(x)sin(x) + f(x)cos(x)
Now, differentiate again with respect to x:
g′′(x) = f′′(x)sin(x) + f′(x)cos(x) + f′(x)cos(x) − f(x)sin(x)
g′′(x) = f′′(x)sin(x) + 2f′(x)cos(x) − f(x)sin(x)
Now, substitute x = −π:
g′′(−π) = f′′(−π)sin(−π) + 2f′(−π)cos(−π) − f(−π)sin(−π)
Since sin(−π) = 0 and cos(−π) = −1, we have:
g′′(−π) = f′′(−π) × 0 + 2f′(−π) × (−1) − f(−π) × 0
g′′(−π) = 0 + 2 × 1 × (−1) − 0
g′′(−π) = −2
Thus, the value of g′′(−π) is −2.

NATA Mock Test - 3 - Question 14

 =

Detailed Solution for NATA Mock Test - 3 - Question 14


= 3

NATA Mock Test - 3 - Question 15

Estimate the answer of .

Detailed Solution for NATA Mock Test - 3 - Question 15

 
= 183.49
= 200

NATA Mock Test - 3 - Question 16

In the Problem Figure, you will find cut-out pieces of one of the response figures A, B, C or D given below. In the question identify the Response Figure of which cut-out pieces are given in the problem figure.

Detailed Solution for NATA Mock Test - 3 - Question 16

Given figure:

In the given question figure, we can see that the cut-out pieces are rotated to get the required figure. The cut pieces are numbered as shown below and placed to form the shape.


So, we can see that an oval shaped figure can be obtained.
Hence, the correct answer is 

Hence, option 'd ' is correct answer.

NATA Mock Test - 3 - Question 17

Govind is 48 years old. He is twice as old as his son Prem is now. How old was Prem seven years ago?

Detailed Solution for NATA Mock Test - 3 - Question 17

Given,
Govind's age =48 years
Then according to the question,
Prem's age = 48 / 2 = 24 Years
Hence, age of Prem seven years ago = 24 − 7
= 17  years

NATA Mock Test - 3 - Question 18

If Rahul finds that he is 12th from the right in a line of boys and 4th from the left, how many boys should be added to the line such that there are 28 boys in the line?

Detailed Solution for NATA Mock Test - 3 - Question 18

Given:
Rahul is 12th from the right in a line of boys and 4th from the left.
It can be represented as,

From the above picture, The number of boys in the line is (4 + 12) - 1 = 15.
To make a line of 28 boys, (28 - 15) i.e. 13 more boys are needed.
Thus, 13 boys must be added.

NATA Mock Test - 3 - Question 19

Four lines are drawn on a plane where no two are parallel and no three lines are concurrent. Lines are drawn joining the points of intersection of the previous four lines. The number of new lines obtained this way is?

Detailed Solution for NATA Mock Test - 3 - Question 19

Let the required 4 lines be as shown below:

Three or more lines in a plane are concurrent if they intersect at a single point.
Hence, the above lines are no three concurrent and no two parallel.
Now, we can extend these lines so that each of them intersects each other. Only three more lines can be joined between these 6 points as below.3

On joining the lines connecting C and E, B and D, A and F with the dotted lines. There are three such lines formed.
Hence, the correct answer is 3.

NATA Mock Test - 3 - Question 20

Identify the building

Detailed Solution for NATA Mock Test - 3 - Question 20
  • Located in Aurangabad, Maharashtra, India, it is known as Bibi Ka Maqbara or Dakkhani Taj (Taj of the Deccan).
  • It was commissioned in 1660 by the Mughal emperor Aurangzeb in the memory of his wife Dilras Banu Begum.
  • Designed in Mughal architecture style, marble and basaltic trap are used for construction.
  • It bears a striking resemblance to the Taj Mahal, the mausoleum of Aurangzeb's mother, Mumtaz Mahal but the decline in architecture and proportions of the structure had resulted in a poor copy.
  • Bibi Ka Maqbara is the second-largest structure that Aurangzeb has built, the largest being the Badshahi Mosque.

Hence, option B is correct.

NATA Mock Test - 3 - Question 21

When some colour A is mixed with a little of its complement, the result will be that…

Detailed Solution for NATA Mock Test - 3 - Question 21

The only certain outcome is that the chroma of Colour A will be lowered.

  • In the option A, if only a little of Colour A's complement is mixed in.
  • In the option D, the value is higher, Only in a few special cases (eg - a bit of yellow added to Violet) might this occur. But even then, subtractive Colour issues will tend to produce a darkening.
  • In the option C, Tertiary is a hue trait that won't be changed by mixing in a bit of a complement. In those cases where Colour A is a tertiary Colour, (e.g. Yellow-Green), it will stay a tertiary Colour until so much of its complement is added that it becomes a neutral.
  • In option B, Chroma is the attribute that expresses the purity of a Colour. Mixing a pure hue with black, white, grey, or any other Colour reduces its purity and lowers the strength of the original hue.
NATA Mock Test - 3 - Question 22

Luminous value of colour when increases makes the colour.

Detailed Solution for NATA Mock Test - 3 - Question 22

The luminous value increasing from left to right. So, from this we can say that, when the luminous value of a colour is increased, it makes the colour light. 

Hence, option A is the correct answer. 

NATA Mock Test - 3 - Question 23

In first angle method the top view is drawn _____ Of the front view.

Detailed Solution for NATA Mock Test - 3 - Question 23

In the first angle method, the top view is drawn at the bottom of the front view. In this method, the right-hand side view is drawn on the left side of front view. First angle method is mostly used in orthographic projections.

NATA Mock Test - 3 - Question 24

Identify the design
“Designing a structure that stands on its own regardless of how old it, this includes maintenance.”

Detailed Solution for NATA Mock Test - 3 - Question 24

The capability of maintaining the serviceability of a structure over a period of time.
In design, it is practiced to achieve the ability of structure , design and construction to withstand weathering actions, abrasion, chemical attack etc.

NATA Mock Test - 3 - Question 25

South central railway has its headquarters at ______.

Detailed Solution for NATA Mock Test - 3 - Question 25

Southcentral railway has its headquarters at Secunderabad. It covers the States of Telangana, Maharashtra and Madhya Pradesh and has three divisions at Secunderabad, Hyderabad and Nanded. In 2019 Vijayawada, Guntur and Guntakal railways station were added in south coastal railway zone.

NATA Mock Test - 3 - Question 26

From which of the point , we draw the perspective view.

Detailed Solution for NATA Mock Test - 3 - Question 26

In the perspective view, we draw rays from the vanishing point. Then draw a vertical projection from a piercing point, getting intersection points of respective corner. Draw the view from the intersection point and join the intersection point.

NATA Mock Test - 3 - Question 27

Directions: In the following question, a word is given. Choose the option that is the most opposite in meaning to the given word.
Deprecate

Detailed Solution for NATA Mock Test - 3 - Question 27

The word has to Appreciate the most nearly opposite in meaning to the given word:
Exaggerate means represent something as being larger, better, or worse than it really is.
Appreciation means recognising the full worth of something or someone.
Approve means to officially agree to or accept as satisfactory.
Encourage means to give support, confidence, or hope to someone.
Only Appreciate means opposite to Depreciate.
Depreciate is the opposite of admire
Hence this is the correct answer.

NATA Mock Test - 3 - Question 28

Find the one-word substitute for the following phrase from the options given below.
Government by the rich:

NATA Mock Test - 3 - Question 29

What secondary colour is obtained by mixing blue and red colours?

Detailed Solution for NATA Mock Test - 3 - Question 29

These are colour combinations created by the equal mixture of two primary colours. 
Example- 
Blue +Yellow= Green,
Blue + Red = Violet (purple is a shade similar to violet.)
Red + Yellow = Orange.
On the colour wheel, secondary colours are located between primary colours.
Below colour wheel explains the relation between primary and secondary colours
Secondary color wheel, Color mixing, Mixing primary colors  

NATA Mock Test - 3 - Question 30

Find the roof truss from the option given.

Detailed Solution for NATA Mock Test - 3 - Question 30

Above is the image of truncated truss.

Above is the image of queen post truss.

Above is the image of fink truss.

Above is the image of king post truss. hence, option B is the correct answer. 

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