⚡️ General science multiple choice questions PDF Test No -9

442. What are the primary colours ?
(a) Red, blue, green
(b) Blue, green, yellow
(c) Yellow, red, blue
(d) Green, white, black

Ans-A ✔

443. If water contracts on freezing which of the following would happen ?
(a) Icebergs will completely float on the surface of water
(b) Lakes would freeze from top to bottom
(c) Ice would become more dense
(d) Rocks will crack due to freezing of internal water

Ans-C ✔

444.Conception generally takes place
(a) At the time of menses
(b) Before menses
(c) Two weeks after menses
(d) Immediately after menses

Ans-C ✔

445. Why do mothers feed the child with Vitamin A ?
(a) To prevent night blindness
(b) To prevent rickets
(c) To prevent beri-beri
(d) To prevent polio

Ans-A ✔

446. Growing children require comparatively more
(a) Carbohydrates
(b) Vitamins
(c) Proteins
(d) All of these

Ans-C ✔

447.Heart patients should avoid taking excess of
(a) Carbohydrates
(b) Proteins
(c) Vitamins
(d) Fats

Ans-D ✔

448.Which of the following is commonly present in acids ?
(a) Hydrogen
(b) Oxygen
(c) Sulphur
(d) Nitrogen

Ans-D ✔

449.Dysentery and influenza are caused by
(a) Bacteria
(b) Bacteria and viruses respectively
(c) Viruses
(d) Viruses and bacteria respectively

Ans-B ✔

450.What is done to raise the dough making bread ?
(a) Yeast is added
(b) Alcohol is added
(c) Carbon dioxide is passed
(d) Air is passed

Ans-A ✔

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