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JEE Main Class XII Weekly Mock 18

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Question 1

Choose the false statement.

Question 2

Z, Z is –

Question 3

Which amine will not react with nitrous acid–

Question 4

Which of the following compound cannot be produced if 1-propane amine is treated with NaNO₂ and HCl –

Question 5

Which of the following amine does not react with Hinsberg reagent–

Question 6

In NPN transistor, if 20% of the electrons emitted combine with the holes, and emitter current is 15mA. Then what is collector current ?

Question 7

In this amplifier, find the Vcc such that VCE= +5,7V. Given that V_BE= 0.7V.

Question 8

A transistor is used as an amplifier with a load resistance of 10k

. If a change of 0.04V in base-to-emitter voltage produces a change of 40

and 4mA change in collector current, the power gain of the amplifier is

Question 9

A bipolar junction transistor has collector current I_C=2 mA, I_B=20

A and I_CBO= 0.2

The value of

Question 10

A transistor has common-emitter current gain of the range 60 to 160 , the common-base current gain range would be

Question 11

Water is poured into an inverted conical vessel of which the radius of the base is 2m and height 4m, at the rate of 77 litre/minute. The rate at which the water level is rising at the instant when the depth is 70 cm is (use π = 22/7)

Question 12

A point is moving along the curve y³ = 27x. The interval in which the abscissa changes at slower rate than ordinate, is

Question 13

If g is the inverse of a function f and f'(x) = 1 / (1+x⁵) , then g'(x) is equal to

Question 14

Let

. If f(x) is continuous in

Question 15

The function f(x) =

is continuous for 0 < x < ∞ then the most suitable values of a and b are -

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May 31JEE & BITSAT