List of top Chemistry Questions

Acetylation reaction of phenol gives

Acetooxime on reduction with $LiAlH_4$ produces

Acetal is produced by reacting alcohol in the presence of dry HCl with

Acetic acid when treated with $ {NH_3}$ forms ammonium acetate which on heating gives

Acetone reacts with Grignard Reagent to form

According to Werner's theory, the primary valencies of the central metal atom

According to the law of triads,

According to Lewis, the ligands are

According to the first law of thermodynamics, $\Delta U = q + w$. In special cases the statement can be expressed in different ways. Which of the following is not a correct expression?

According to Lewis concept of acids and bases,ethers are

A x molal solution of compound in benzene has a mole fraction of solute equal to 0.2. The value of x is

A white precipitate is obtained by the hydrolysis of

A Williamson's synthesis of ethers is an example of

A well stoppered thermos flask contains some icecubes. This is an example of

A weather balloon filled with hydrogen at 1 atm and 27$^\circ$C has volume equal to 1200 litres. On ascending, it reaches a place where temperature is -23$^\circ$C and pressure is 0.5 atm. The volume of the balloon is

Which of the following contribute towards photochemical smog formation?

Saline soil contains

Ultraviolet radiation from sun causes a reaction that produces

Most hazardous metal pollutant of automobile exhausts is

Taj may be destroyed by

Which of the following is/are the main agents of soil erosion?

Classical Smog is also known as

Ozone layer of upper atmosphere is being destroyed by

Increased asthmatic attacks in certain seasons are related to

Which one of the following dissolves more rapidly in blood haemoglobin than oxygen ?