Which of the following is a device designed to protect electrical devices from voltage spikes?
(A) Heat protector
(B) Voltage unloader
(C) Current unloader
(D) Surge protector
Which is the largest human cell?
(A) Spleen
(B) Ovum
(C) Liver
(D) Skin
Endothermic reactions are those in which?
(A) Temperature increases
(B) Light is produced
(C) Heat is evolved
(D) Heat is absorbed
The bending of light when it passes around a corner or a slit is due to ______.
(A) Diffraction
(B) Total internal reflection
(C) Reflection
(D) Refraction
Which of the following is used as a coolant in nuclear reactors?
(A) calcium
(B) Graphite
(C) Heavy water
(D) Cadmium
Antimatter particles corresponding to electrons are called_____.
(A) Neutrons
(B) Positrons
(C) Protons
(D) Antielectron
What is the physical phase of life called?
(A) Cytoplasm
(B) Organelles
(C) Protoplasm
(D) None of the above
Who invented Vacuum Flask?
(A) Gregory Pincus
(B) James Dewar
(C) Charles Babbage
(D) Alexander Fleming
The mirror used in vehicles is called
(A) Convex
(B) Concave
(C) Plane
(D) None of these
The number of neutrons in 13Al27 is
(A) 14
(B) 13
(C) 40
(D) 27
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