List of practice Questions

∆H and ∆S were given, find ∆G (Gibbs energy).
If Bromopropane and Bromomethane were treated with sodium and ether, then what is the product?
Find the ratio of the t0 and t for a first-order reaction.
Find the Current unit conversion from SI to CGS.
At the pure inductive stage, find emax.
What is the value of the specific rotation of the glucose molecule?
Find the height of a conical pendulum if the time period is given.
Find the change in the charge carriers of a p-n junction diode if its temperature is increased?
Who gave the theory of root pressure?
Match List I with List II
LIST I (Amines)LIST II (pKb​)
AAnilineI3.25
BEthanamineII3.00
CN-EthylethanamineIII9.38
DN, N-DiethylethanamineIV3.29
 Choose the correct answer from the options given below:
A Simple pendulum experiment is performed for the value of 'g',the acceleration due to the earth's gravity. The measured value of length of the pendulum is 25 cm with an accuracy of 1 mm and the measured time for 100 oscillations is found to be 100 sec with an accuracy of 1 sec. The percentage uncertainty in the determination of 'g' is:
Acceleration due to gravity at a height of H from the surface of a plane is the same as that at a depth of H below the surface.If R is the radius of the planet, then H vs. R graph for different planets will be
\(∫_0^1 (5xe^{2x}-tan(π/4)) dx=\)
A balloon starting from rest ascends from the ground with a uniform acceleration of 4 ft/sec2. At the end of 5 sec, a stone is dropped from it. If t be the time to reach the stone to the ground and H is the height of the balloon when the stone goes to the floor, Then
X-rays of wavelength λ get reflected from parallel planes of atoms in a crystal with spacing d between two planes as shown in the figure. If the two reflected beams interfare constructively,Then the condition for maxima will be(n is the order of interference fringe)
X-rays of wavelength λ get reflected from parallel planes
A six faced fair die is rolled for a large number of times. Then, the mean value of the outcome is 
A sinusoidal voltage of amplitude \( 25 \) V and frequency \( 50 \) Hz is applied to a half-wave rectifier using a P-N junction diode. No filter is used, and the load resistor is \( 1000\Omega \). The forward resistance \( R_f \) of the ideal diode is \( 10\Omega \). The percentage rectifier efficiency is:
A metallic rod of length 1 m held along east-west direction is allowed to fall down freely. Given horizontal component of earth’s magnetic field BH = 3 × 10-5 T. The emf induced in the rod at an instant t = 2s after it is released is ( Take g = 10 ms-2 )

If R -(α,β) is the range of  \(\frac{x+3}{(x-1)(x+2)}\) then the sum of the intercepts of the line ax + βy + 1 = 0 on the coordinate axes is:

Which of the following is least reactive towards Sn1 reactions?

The following molecule with the structure acts as

Ziegler-Natta Catalyst is used in the manufacture of

Match the following List -I (Complex) List II (Spin only Magnetic Moment)

 List -I (Complex)  List II (Spin only Magnetic Moment)
A) [CoF6]3-I)0
B) [Co(C2O4)3]3- II)√24
C)[FeF6]3+III)√8 
D)[Mn(CN)6]3-IV)√35
  V)√15

the correct answer is:

Among the following the incorrect statement about transition metals is

XeF4 + O2F2 → X + O2 
X + H2O → Y +2HF 
The shape of the molecules of X and Y respectively are: