NTPC CBT-2 Chemistry Quiz - 12

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Question 1:

Chloroform is kept in dark because

Question 2:

Which one of the following methods can be used to separate anthracene from a mixture of salt and anthracene ? 

Question 3:

Which of the following metals is a bad conductor of heat?

Question 4:

Which one of the following types of glass can cut off ultraviolet rays ?

Question 5:

The process in which an ore is heated strongly at high temperature in an enclosed surface is called

Question 6:

Which one of the following is the most fundamental characteristic of an element?

Question 7:

Which of the following statement is incorrect about red phosphorous ?

  1. Red phosphorous is obtained by heating white phosphorous .
  2. Red phosphorous is more reactive than white phosphorous

Question 8:

Who discovered the law of definite proportions ?

Question 9:

The example of oligosaccharide is

Question 10:

Two elements A and B are present in same group of Newland’s periodic table. Number of elements present in between A and B are