Quiz about Quiz - JEE 12+

Question 1

None

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 2

Cu2+ salt reacts with potassium iodide to give

Accepted Answer

Cu2I2

Answer

Cu2I3

Answer

CuI

Answer

CuI3

Question 3

None

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 4

None

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 5

How many pi-bonds are present in C2 molecule?

Accepted Answer

2

Answer

1

Answer

0

Answer

4

Question 6

None

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 7

None

Accepted Answer

A

Answer

B

Answer

C

Answer

D

Question 8

None

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 9

None

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 10

None

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 11

None

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 12

None

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 13

The density of a solution prepared by dissolving 120 g of urea (mol. mass = 60 u) in 1000 g of water is 1.15 g/mL. The molarity of this solution is

Accepted Answer

2.05M

Answer

0.50M

Answer

1.78M

Answer

1.02M

Question 14

Which one of the following conformations of cyclohexane is chiral?

Accepted Answer

Twisted Boat

Answer

Boat

Answer

Chair

Answer

Rigid

Question 15

None

Accepted Answer

3/2

Answer

5/4

Answer

3

Answer

2

Question 16

None

Accepted Answer

36

Answer

6

Answer

12

Answer

18

Question 17

None

Accepted Answer

-4

Answer

-2

Answer

-3

Answer

Does Not Exist

Question 18

None

Accepted Answer

a=1

Answer

a= -1

Answer

b= 7.5

Answer

b= -7.5

Question 19

None

Accepted Answer

11/14

Answer

3/14

Answer

5/15

Answer

9/14

Question 20

None

Accepted Answer

1/3

Answer

1/6

Answer

2/3

Answer

1/4

Question 21

None

Accepted Answer

-2017

Answer

0

Answer

-2018

Answer

1

Question 22

None

Accepted Answer

48

Answer

-48

Answer

0

Answer

1

Question 23

None

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 24

If the mean and variance of binomial variate X are 2 and 1 respectively, then the probability that X takes a value greater than one is equal to

Accepted Answer

11/16

Answer

1/16

Answer

3/4

Answer

15/16

Question 25

None

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 26

None

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 27

If a , b are odd integers , then the roots of the equation 2ax^(2) + (2a+b)x + b = 0 , a not equal to zero

Accepted Answer

rational

Answer

non real

Answer

irrational

Answer

equal

Question 28

The value of a for which sum of the squares of the roots of the equation x^(2) - (a - 2)x - a - 1 = 0 assumes the least value is

Accepted Answer

1

Answer

2

Answer

7

Answer

0

Question 29

A uniform slender rod of length L, cross-sectional area A and Young's modulus Y is acted upon by the forces shown in the figure. The elongation of the rod is:

Accepted Answer

8FL/3AY

Answer

3FL/5AY

Answer

2FL/5AY

Answer

3FL/8EY

Question 30

Heat energy of 735 J is given to a diatomic gas allowing the gas to expand at constant pressure. Each gas molecule rotates around an internal axis but do not oscillate. The increase in the internal energy of the gas

Accepted Answer

441

Answer

525

Answer

572

Answer

735

Question 31

A particle is dropped under gravity from rest from a height  h(g=9.8m/s2). and it travels a distance  9h/25  in the last second, the height h is

Accepted Answer

122.5m

Answer

100m

Answer

145

Answer

167.5

Question 32

Two pendulums of lengths 1.44 and 1 metre length start swinging together. After how many vibrations they will again start swing together?

Accepted Answer

5

Answer

3

Answer

4

Answer

6

Question 33

The eye can be regarded as a single refracting surface. The radius of curvature of this surface is equal to that of the cornea (7.8 mm). This surface separates two media of refractive indices 1 and 1.34. Calculate the distance from the refracting surface at which a parallel beam of light will come to focus

Accepted Answer

3.1cm

Answer

4.5cm

Answer

1cm

Answer

5.3cm

Question 34

The electrical conductivity of a semiconductor increases when electromagnetic radiation of a wavelength shorter than 2480 nm is incident on it. The bandgap in (eV) for the semiconductor is

Accepted Answer

0.5ev

Answer

0.7ev

Answer

1.1ev

Answer

2.5ev

Question 35

The parallel combination of two air filled parallel plate capacitors of capacitance C and nC is connected to a battery of voltage, V. When the capacitors are fully charged, the battery is removed and after that a dielectric material of dielectric constant K is placed between the two plates of the first capacitor. The new potential difference of the combined system is

Accepted Answer

(n+1)V/(K+n)

Answer

V

Answer

nV/(K+n)

Answer

V/(K+n)

Quiz - JEE 12+

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