RRB GROUP D Chemistry Quiz - 15

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Question 1:

Which one of the following substances do silver articles react with, that makes the silver articles black ?

Question 2:

Which are the materials generally employed as solder in soldering operations in electronics ?

Question 3:

Common salt is not used as a raw material for preparation of which one of the following ?

Question 4:

Which of the following was discovered first in the chromospheres of the sun?

Question 5:

Which one of the following elements is a non-metal but is lustrous ?

Question 6:

The radioactive isotope of hydrogen is-

Question 7:

Which one of the following statements about the cleansing action of soap is not true ?

Question 8:

Javelle water is an aqueous solution of which of the following?

Question 9:

Which of the following is used for building purpose and in the production of carbon dioxide in laboratory?

Question 10:

Boron and aluminium resemble chemically . This is due to equal in their