General Science QUESTIONS AND ANSWERS

General Knowledge : General Science QUESTIONS AND ANSWERS :: part18 : 51 to 55

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

51.The device used to convert alternating current into direct current is

ammeter

galvanometer

rectifier

transformer

52.To a space traveller on moon, the lunar sky during day time appears

white

blue

red

black

53.Given below are two statements, labeled as Assertion (A) and Reason (R). In the context of the two statements, which of the following is correct ? 1. Assertion (A) : Dry battery cannot be recharged. 2. Reason (R) : The chemical reaction is reversible.

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.

54.Air-pockets that cause aircrafts to lose altitude suddenly are caused by

dense cloud cover

poor visibility

temperature inversions

intense low pressure in valleys that suck in air

55.The Electric Lamp was discovered by

Ford

Marconi