General Science QUESTIONS AND ANSWERS

General Knowledge : General Science QUESTIONS AND ANSWERS :: part15 : 76 to 80

Following General Knowledge Multiple choice objective type questions and answers will help you in TRB, SSC and UPSC 2014 examinations :

76.Given below are two statements, labelled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : Galvanised iron does not rust easily.Reason (R) : Zinc has oxidation potential.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

77.Which of the following chemicals in automobile exhaust can cause cancer ?

Oxides of nitrogen

Carbon monoxide

Polyclinic hydrocarbons

Lead

78.Given below are two statements, labelled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ?Assertion (A) : Hydrometer measures the concentraion of salt in a solution.Reason (R) : Hydrometer works on the principle of floating.

Both A and R are true and R is the correct explanation of A.

Both A and R are true but R is not the correct explanation of A.

A is true but R is false.

A is false but R is true.

79.Alcoholic beverages contain

methanal

methyl alcohol

butyl alcohol

ethyl alcohol

80.In a car, radiator and fan are used to cool the engine. The heat transfer modes involved are

conduction and convection

convenction and radiantion