Which principle does the optical fiber work on?
(A) Full internal reflection
(B) Refraction
(C) Scattering
(D) Interference
Who among the following discovered laws of planetary motion?
(A) J. Kepler
(B) Albert Einstein
(C) N. Copernicus
(D) Otto Blathy
The cells which are responsible for the production of antibodies are
(A) Red blood cells
(B) Neutrophils
(C) Lymphocytes
(D) Platelets
The important metal used with iron to make it rust-free –
(A) Aluminum
(B) Carbon
(C) Chromium
(D) Tin
A steam engine converts the heat energy of steam into ______.
(A) Electrical energy
(B) Chemical energy
(C) Mechanical energy
(D) Thermal energy
Our solar system consists of how many planets?
(A) 8
(B) 10
(C) 9
(D) 7
Accumulation of which one of the following in the muscle leads to fatigue?
(A) Lactic acid
(B) Pyruvic acid
(C) Benzoic acid
(D) Uric acid
Nilgai belongs to the following family
(A) Cow
(B) Goat
(C) sheep
(D) Deer
The number of chambers in a human heart is –
(A) Four
(B) Two
(C) Three
(D) Five
Which one of the following is not correctly matched –
(A) Anemometer - wind speed
(B) Ammeter - Electric current
(C) Tacheometer - Pressure difference
(D) Pyrometer - High temperature
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