RRB GROUP D Chemistry Quiz - 51

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Question 1:

Which of the following is used for removing air bubbles from glass during its manufacture?

Question 2:

What type of fertilizer is rotten plant and animal waste?

Question 3:

Which one of the following is related to soil?

Question 4:

The rates of diffusion of gases are inversely proportional to square root of their densities. This statement refers to

Question 5:

The PH of a solution changes from 3 to 6. The H+ ion concentration –