List of practice Questions

Correct order of strength of H-bond in the following -:
(A) Liquid water
(B) Ice
(C) Impure water

How many reactions are non-spontaneous at 300 K. For independent reaction ΔH & ΔS values are given.

Column-I	Column-II
(A) Zone refining	(P) pig iron
(B) Electrolysis	(Q) Al
(C) Reverberatory furnace	(R) Si
(D) Blast furnace	(S) Cu

Statement-I: Noradrenaline is one of the neurotransmitter.

Statement-II: Low level of noradrenaline is not cause of depression in humans.

In light of the above statements, choose the correct answer from the options given below

$H_2O_2$ behave like reducing agent in which of the following reactions:

Which one amongst the following are good oxidizing agents?
(A) $ \text{Sm}^{\text{2+}}$
(B) $\text{Ce}^{\text{2+}}$
(C)$ \text{Ce}^{\text{4+}}$
(D) $\text{Tb}^{\text{4+}}$
Choose the most appropriate answer from the options given below:

Match List I with List II:

LIST I (Type)	LIST II (Name)
(P) Antifertility drugs	(A) Norethindrone
(Q) Antihistamines	(B) Seldane
(R) Tranquilizers	(C) Meprobamate
(S) Antibiotics	(D) Penicillin

Choose the correct answer from the options given below:

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A) : Benzene is more stable than hypothetical cyclohexatriene
Reason (R) : The delocalised π-electrons cloud is attracted more strongly by the nuclei of the carbon atoms than the electron cloud localised between two carbon atoms.
In the light of the above statements, choose the correct answer from the options given below

Number of unpaired electron in highest occupied molecular orbital of following species is :$N_2, N ^+_ 2 , O_2, O^+_ 2 $ ?

The metal which is extracted by oxidation and subsequent reduction from its ore is:

$K_2Cr_2O_7$ paper acidified with dil. $H_2SO_4$ turns green when exposed to :

An $ \alpha $-particle, a proton, and an electron have the same kinetic energy. Which one of the following is correct in case of their De-Broglie wavelength:

Given below are two statements:
Statement-I: Pure Aniline and other arylamines are usually colourless.
Statement-II: Arylamines get coloured on storage due to atmospheric reduction
In the light of the above statements, choose the most appropriate answer from the options given below:

Choose the correct options based on the column shown below.

1.	TV signal	(P)	12 GHz
2.	Satellite	(Q)	30 MHz
3.	AM	(R)	88 MHz
4.	FM	(S)	1 MHz

Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R:
S-1 $\rightarrow$ Steel is used in construction of a bridge and house.
S–2 $\rightarrow$ Modulus of elasticity of steel is high.
In the light of the above statements, choose the correct answer from the options given below

If frequency can be represented as f = (radius)a (density)b (surface tension)c. Find a, b, c?

When a parallel beam of white light incident on convex lens split into different colours the phenomenon is called.

S₁: Be⁺² has higher SRP than other alkaline earth metals.
S₂: Be⁺² has higher hydration energy and greater △aH (atomisation enthalpy) than other alkaline earth metals.

Let $f: R -\{2,6\} \rightarrow R$ be real valued function defined as $f(x)=\frac{x^2+2 x+1}{x^2-8 x+12}$ Then range of $f$ is

Two isolated metallic solid spheres of radii $R$ and $2 R$ are charged such that both have same charge density $\sigma$. The spheres are then connected by a thin conducting wire. If the new charge density of the bigger sphere is $\sigma^{\prime}$ The ratio $\frac{\sigma^{\prime}}{\sigma}$ is :

The sum $\displaystyle\sum_{n=1}^{21} \frac{3}{(4 n-1)(4 n+3)}$ is equal to

A chloride salt solution acidified with dil $HNO _3$ gives a curdy white precipitate, $[A]$, on addition of $AgNO _3 - [A]$ on treatment with $NH _4 OH$ gives a clear solution, $B$$A$ and $B$ are respectively

$\displaystyle\lim _{n \rightarrow \infty} \frac{1}{2^n}\left(\frac{1}{\sqrt{1-\frac{1}{2^n}}}+\frac{1}{\sqrt{1-\frac{2}{2^n}}}+\frac{1}{\sqrt{1-\frac{3}{2^n}}}+\ldots +\frac{1}{\sqrt{1-\frac{2^n-1}{2^n}}}\right)$ is equal to

The number of functions $f:\{1,2,3,4\} \rightarrow\{ a \in: Z|a| \leq 8\}$ satisfying $f(n)+\frac{1}{n} f( n +1)=1, \forall n \in\{1,2,3\}$ is

If $A$ and $B$ are two events such that $P ( A )=\frac{1}{3}, P ( B )=\frac{1}{5}$ and $P ( A \cup B )=\frac{1}{2}$, then $P \left( A \mid B ^{\prime}\right)+ P \left( B \mid A ^{\prime}\right)$ is equal to