Which gas is used in refrigerators for cooling...? Mcqs

Latest MCQs

Which gas is used in refrigerators for cooling...?

(A) Chlorofluorocarbon
(B) Nitrogen

(C) Helium
(D) Tetrafluoroethene

Latest MCQs

Ascorbic acid is...?

(A) Vitamin A
(B) Vitamin C

(C) Vitamin D
(D) non of these

Latest MCQs

Which of the following is not a chemical reaction...?

(A) Burning of a paper
(B) Conversion of Water into stream

(C) Digestion of food
(D) Burning of coal

Latest MCQs

What is a mixture of potassium nitrate Charcoal and Sulphur called...?

(A) Paint
(B) Aluminum

(C) Brass
(D) Gunpowder

Latest MCQs

How many Neutrons in Hydrogen:...?

(A) O
(B) 1

(C) 2
(D) None of these

Latest MCQs

Which gas is filled in electric bulb...?

(A) Nitrogen
(B) Oxygen

(C) Carbon dioxide
(D) None of these

Latest MCQs

What is the study of fossils called...?

(A) Paleontology
(B) Archaeology

(C) Geology
(D) Anthropology

Latest MCQs

What is most common salt in sea water...?

(A) Calcium barbonate
(B) Potassium Chloride

(C) Sodium Chloride
(D) Magnesium Sulphate

Latest MCQs

Biogas produced as a result of anaerobic decay of organic matter consist primarily of __________ gases...?

(A) N₂ & SO2
(B) NH3 & CO2

(C) O2 & N₂
(D) None of these

Latest MCQs

How many neutrons in hydrogen:...?

(A) O
(B) 1

(C) 2
(D) 3

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