100+ Mechanical & Electrical Engineering Materials Science Quiz Questions - 2

Question: 6

Litharge is an ore for the extraction of

(A) antimony

(B) copper

(C) manganese

(D) lead

Question: 7

The most negative electronegative element is

(A) iodine

(B) fluorine

(C) sodium

(D) oxygen

Question: 8

Which of the following cannot convert AC into DC

(A) transformer

(B) converter

(C) mercury arc rectifier

(D) diode

Question: 9

Chlorine is used as a disinfectant and germicide because

(A) it can behave as a base

(B) it can behave as an acid

(C) it is a reducing agent

(D) it is oxidizing agent

Question: 10

An example of forced oscillation is

(A) a sonometer wire excited by a tuning fork

(B) a plucked sonometer wire

(C) the windscreen wiper

(D) the pendulum of a clock