Multiple Choice Questions (MCQ) on Chemistry
1-For a chemical to be an explosive, which of the following condition needs to be met?
(A) Rapidity of reaction
(B) Rapid production of gases
(C) Highly exothermic reaction
(D) All of the above
2-The oldest explosive material prepared by man is:
(A) RDX
(B) TNT
(C) Black powder
(D) Dynamite
3-The chemical name of RDX is:
(A) Pentaerythritol tetranitrate
(B) Cyclotetramethylenetetranitramine
(C) Cyclotrimethylenetrinitramine
(D) Hexamethylenetetramine
4-Which of the following is necessary to generate LASER light.
(A) Phosphorescence
(B) Stimulated emission
(C) Delayed fluorescence
(D) Spontaneous emission
5-The oxidative addition & reductive elimination steps are favored by
(A) Electron rich & electron deficient metal centers respectively
(B) Electron deficient & electron rich metal centers respectively
(C) Electron deficient metal centers
(D) Electron rich metal centers
6-1 fermi (fm) = ?
(A) 10-19 cm
(B) 10-12 cm
(C) 10-15 cm
(D) 10-13 cm
7-“Radioactivity” was first scientifically observed by:
(A) Marie Curie
(B) Pierre Curie
(C) Henri Becquerel
(D) Albert Einstein
8-What is the safest way to dispose of a large quantity of highly radioactive waste?
(A) Burning it on a fire
(B) Pumping it into a river
(C) Burying it in dry rock deep underground
(D) Pouring it down the drain
9-Loosening of teeth, gingivitis and hemorrhage occur in the deficiency of:
(A) Vitamin C
(B) Vitamin B6
(C) Vitamin B1
(D) Vitamin K
10-Crude oil is converted in to useful products by:
(A) Refining
(B) Roasting
(C) Solvay process
(D) Drilling
ANSWERS:
1-(D), 2-(C), 3-(C), 4-(B), 5-(A), 6-(D), 7-(C), 8-(C), 9-(A), 10-(A)