List of top Chemistry Questions

Which of the following represents the zero overlap ?

The extent of adsorption of a gas on a solid depends on

The correct decreasing order of basic strength of the following species is

In the metallurgy of aluminium

On cooling, the brown colour of nitrogen dioxide disappears. On cooling, $ NO_{2}$ undergoes dimerisation resulting in the pairing of odd electrons of $NO_{2}$.

Which of the following is an emulsion?

Which of the following is not an ore of iron?

Which of the following statement is not true for hydrolysis of $XeF_6$ ?

Which one of the following pairs represents stereoisomerism?

Which one of the following reaction provides a primary alcohol?

Which of the following element has lowest melting point?

Which of the following compounds are optically active? (i) 3-hydroxypentane$\quad$$\quad$ (ii) 2-aminopropanoic acid (iii) 2-chlorobutane $\quad$$\quad$(iv) 2-methylbutane Choose your answer from the codes given below

When trans-2-butene is reacted with Br then product formed is

What reagent is used in the Hinsberg test of amines?

There is loss in weight when mixture of $ L{{i}_{2}}C{{O}_{3}} $ and $ N{{a}_{2}}C{{O}_{3}}.10{{H}_{2}}O $ is heated strongly. This loss is due to

The group 13 element that is liquid during summer and used for measuring high temperature is

The ability of d-block elements to form complexes is due to

Strength of $H_2O_2$ is $15.18\, g\, L^{-1}$, then it is equal to

Starch is a mixture of two components, a water soluble component amylose $(15-20\%)$ and a water insoluble component amylopectin $(80-85 \%)$. The aqueous solution of amylose gives a blue colour with iodine solution due to the formation of

Select the correct pair amongst the following.

Rubber is commercially obtained from

Predict in which of the following entropy decreases.

Photochemical smog is formed in

Particle $A$ makes a perfectly elastic collision with another particle $B$ at rest. They fly apart in opposite directions with equal speeds. The ratio of their masses $m_A/m_B$ is

Nucleic acids are polymers of