Science Chemistry MCQ-203

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



Heavy water freezes at

 
 
 
 

The nature of water is

 
 
 
 

The ozone layer is mainly damaged by

 
 
 
 

Temporary hardness of water can be removed

 
 
 
 

The exhausted permutit is generally regenerated by persolating through it a solution of

 
 
 
 

The H

 
 
 
 

The solubility of NaCl is

 
 
 
 

For softening water by the Calgon’s process the chemical used is

 
 
 
 

Magnesium reacts with boiling water to give

 
 
 
 

Hydrogen can not be prepared by the action of

 
 
 
 

Para-and ortho-hydrogens differ in

 
 
 
 

Hydrogen acts as a

 
 
 
 

The boiling point of liquid hydrogen is

 
 
 
 

Atomic hydrogen combines with acetylene to form

 
 
 
 

Atomic hydrogen is obtained by passing ordinary hydrogen through^

 
 
 
 

Hydrogen acts as an oxidising agent in its reaction with

 
 
 
 

The number of protons, electrons and neutrons in tritium are

 
 
 
 

Which of the following compounds is converted from a liquid state to solid state by hydrogen ?

 
 
 
 

The composition of the nucleolus of deuterium is

 
 
 
 

The property of hydrogen which distinguish it from other alkali metal is

 
 
 
 

In Lane’s process reduction of steam is carried out by heated

 
 
 
 

Which of the following terms is not correct for hydrogen ?

 
 
 
 

is substituted by its isotope deuterium. Hydrogen does not react directly with

 
 
 
 

Which one of the following metals liberates hydrogen when treated with alkali hydroxide ?

 
 
 
 

The isotopes of hydrogen contain differ number of