Science Chemistry MCQ-138

General Science-Chemistry objective Quiz for SSC, UPSC, RBI, CDS, UPPSC, NDA, CivilsPrelims, JPSC Exams



One mole of potassium chlorate is thermally .decomposed and excess of aluminium is burnt in the gaseous product. How many moles of aluminium oxide are formed?

 
 
 
 

One should not sleep in a Closed room where a charcoal fire is burning because

 
 
 
 

Orthoboric acid on heating to red heat gives a residue of

 
 
 
 

Oxygen does not react with

 
 
 
 

Oxygen is denser than air hence it is collected over

 
 
 
 

Oxygen is not evolved when ozone reacts with

 
 
 
 

Ozone is

 
 
 
 

Ozone is an. ..of oxygen.

 
 
 
 

Paraffin wax used for making candles is 1 obtained from

 
 
 
 

Beta-Particles are

 
 
 
 

Passing a battery current through a solution of brine will produce

 
 
 
 

People have isolated organic compounds from plants since antiquity. By gently heating or steam distilling certain plant materials, one can obtain mixtures of odoriferous compounds known as

 
 
 
 

Permanent hardness of water due to sulphates of metals can be destroyed by the use of

 
 
 
 

Permanent hardness of water is due to the presence of

 
 
 
 

Persons in asbestos factories are affected by air pollution. The most affected part of their body is the

 
 
 
 

Petroleum consists of a complex mixture of

 
 
 
 

Petroleum is found in

 
 
 
 

Phenol is a raw material used in the manufacture of

 
 
 
 

Phosgene can be used as

 
 
 
 

Photosynthesis in plants leads to the formation of

 
 
 
 

Pick the odd one out.

 
 
 
 

Pick the wrong statement. Hydrogen bonding results in

 
 
 
 

Plastic nylon is best described as which one of the following?

 
 
 
 

Polythene is formed by

 
 
 
 

Positrons are particles