RRB GROUP D SCIENCE QUIZ

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Question 1:

Which organ is not a gland?

Question 2:

Most of the oxygen on earth is produced by -

Question 3:

Cell wall is mainly composed of?

Question 4:

Which of the following has bilateral symmetry in body organization?

Question 5:

How many Protons in C-14?

Question 6:

Chlorofluorocarbons are not used in ______.

Question 7:

A milkman adds a small amount of baking soda to milk. This makes the pH of the milk-

Question 8:

How many neutrons in C-14?

Question 9:

In water, the proportion of oxygen and hydrogen by mass is :

Question 10:

A chemical reaction in which heat is produced is called____ ?