JEE Main Test 118

Result

JEE Main Test 118

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

The aperture of the objective lens of a telescope is made large so as to

A
increase the resolving power of the telescope

B
increase the magnifying power of the telescope

C
to focus on distant objects

D
make image aberrationless

Solution

Because of the ability of an optical instrument to produce separate and clear images of two near by objects.
Question 2
4 / -1

A line makes the same angle θ with each of the X and Z - axes. If it makes the angle β with Y - axis such that sin² β = 3 sin²θ, then cos² θ equals

A
3/5

B
1/5

C
2/5

D
2/3

Solution
Question 3
4 / -1

A vector perpendicular to the plane containing the points A(1, -1, 2), B(2, 0, -1) and C(0, 2, 1) is

A

B

C

D

Solution
Question 4
4 / -1

If α and β are the collector emitter short circuit current amplification factor and collector base short circuit current amplification factor respectively of a transistor then α is equal to

A

B

C

D

Solution
Question 5
4 / -1

It is given that the events A and B are such that P(A) = 1/4, P(A/B) = 1/2 and P(B/A) = 2/3. Then, P(B) is equal to

A
1/2

B
1/6

C
1/3

D
2/3

Solution
Question 6
4 / -1

Two elements A and B with atomic numbers Z_A and Z_B are used to produce characteristic, X-rays, with frequencies v_A and v_B respectively. If Z_A : Z_B = 1 : 2 , then v_A : v_B will be

A
1 : √2

B
1 : 8

C
4 ; 1

D
1 : 4

Solution
Question 7
4 / -1

Which of the following is a possible nuclear reaction ?

A

B

C

D

Solution
Question 8
4 / -1

A
acetaldehyde

B
acetylene

C
ethylene

D
acetyl chloride

Solution
Question 9
4 / -1

An organic compound A upon reacting with NH₃ gives B . On heating , B gives C . C in the presence of KOH reacts with Br₂ to give CH₃CH₂NH₂. A is

A
CH₃COOH

B
CH₃CH₂CH₂COOH

C

D
CH₃CH₂COOH

Solution
Question 10
4 / -1

With reference to the scheme given, which of the given statement (s) about T, U ,V and W is (are) correct?

A
T is soluble in hot aqueous NaOH

B
Molecular formula of W is C₁₀H₁₈O₄

C
V gives effervescence on treatment with aqueous NaHCO₃

D
All are correct

Solution