Which of the following polymer is obtained on the polymerization of hexamethylene diamine and adipic acid?
(A) Nylon - 6,6
(B) Terylene
(C) Toluene
(D) Bakelite
Which type of mirror is used by dentists to see the larger image of the patient's teeth?
(A) Flat
(B) Concave
(C) Flat
(D) Convex
Which of the following represents a correct food chain?
(A) Frog → eagle → insects → grass → snake
(B) Grass → insects → frog → snake → eagle
(C) Grass→ frog → insects → eagle→ snake
(D) Frog → snake → insects → grass → eagle
Produces moving charge-
(A) electric field only
(B) Magnetic field only
(C) both magnetic field and electric field
(D) none of these
From which part of the plant turmeric is obtained?
(A) stem
(B) root
(C) flowers
(D) None of these
In what form is phosphate found in bones?
(A) vitamin
(B) calcium
(C) Protein
(D) Energy
Who invented the rabies vaccine?
(A) Hanfree Davy
(B) Charles Darwin
(C) Lewis Pasteur
(D) none of these
The rotations per second of a wheel that spins at an accelerating rate are measured by
(A) Chronometer
(B) hydrometer
(C) calipers
(D) stroboscope
Radio waves are reflected from which part of the atmosphere-
(A) Ionosphere
(B) Stratosphere
(C) Mesosphere
(D) None of these
When was the Space Commission established in India?
(A) July 1972
(B) July 1973
(C) June 1972
(D) June 1973
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