List of practice Questions

The composition of water gas is

A pair of amphoteric oxides is

A mass $m$ is attached to two springs as shown in the figure. The spring constants of the two springs are $K_1$ and $K_2$. For the frictionless surface, the time period of oscillation of mass $m$ is:

At 500 K, for a reversible reaction \(A_{2_{(g)}}+B_{2_{(g)}}⇌2AB_{(g)}\) in a closed container, K_C = 2 × 10^-5. In the presence of catalyst, the equilibrium is attaining 10 times faster. The equilibrium constant K_C in the presence of catalyst at the same temperature is

Which of the following statement is INCORRECT ?

Let $P$ be a square matrix such that $P^2 = I - P$. For $\alpha, \beta, \gamma, \delta \in \mathbb{N}$, if $P^\alpha + P^\beta = \gamma I - 29P$ and $P^\alpha - P^\beta = \delta I - 13P$, then $\alpha + \beta + \gamma - \delta$ is equal to:

In the situation shown in the diagram, magnitude of q << | Q | and r>>a. The net force on the free charge -q and net torque on it about O at the instant shown are respectively
[ p = 2aQ is the dipole moment ]

Which of the following monomers form biodegradable polymers ?

Receptors are proteins and crucial to body communication process. These receptors are embedded in

The correct order of first ionisation enthalpy of given elements is

Match the List-I with List-II in the following :

List-I		List-II
1.	Caprolactum	(a)
2.	Vinyl chloride	(b)
3.	Styrene	(c)
4.	Propene	(d)

Which one of the following is a non-narcotic analgesic ?

Thyroxine produced in the thyroid gland is an iodinated derivative of _______.

In the reaction :

P,Q and R respectively are :

The correct order of match between column X and Column Y is :

X		Y
I.	Vitamin A	i.	Muscular weakness
II.	Vitamin D	ii.	Increased blood clotting time
III.	Vitamin E	iii.	Night-blindness
IV.	Vitamin K	iv.	Osteomalacia

Sucrose is dextrorotatory but after hydrolysis the mixture show laevorotation, this is because of

Y in the above reaction is

The heating of phenyl methyl ether with HI produces an aromatic compound A which on treatment with con. HNO₃ gives B. A and B respectively are,

A better reagent to oxidize primary alcohols into aldehyde is :

Aniline does not undergo

Compounds P and R in the following reaction are

Which of the following is an organometallic compound ?

Hybridisation change involved at C-1 in the above reaction

A 60 W source emits monochromatic light of wavelength 662.5 nm. The number of photons emitted per second is

An unpolarised light of intensity I is passed through two polaroids kept one after the other with their planes parallel to each other. The intensity of light emerging from second polaroid is \(\frac{I}{4}\). The angle between the pass axes of the polaroids is