ECG is used to study the disease related to ________.
(A) Blood
(B) Kidney
(C) Heart
(D) Brain
Optics is the study of:
(A) Atmosphere
(B) Nature & Properties of light
(C) Insects
(D) Disease
The pH of acid rain is
(A) More than 8
(B) 7
(C) Less than 5.5
(D) None
How many bones are found in children?
(A) 206
(B) 300
(C) 304
(D) 305
X-rays are _________ waves.
(A) Transverse
(B) Longitudinal
(C) Elastic
(D) Electromagnetic
Light year is a unit of
(A) Time
(B) Distance
(C) Speed of light
(D) Intensity of light
A liquid disturbed by stirring comes to rest due to
(A) density
(B) surface tension
(C) viscosity
(D) centripetal force
Which among the following is used to dilute oxygen in the gas cylinders used by divers?
(A) Krypton
(B) Argon
(C) Helium
(D) Neon
The release of which of the following into ponds and wells helps in controlling mosquitoes?
(A) Snail
(B) Crab
(C) Dogfish
(D) Gambusia fish
Which gas is present in biogas in large percentage?
(A) Moisture (H2O)
(B) Carbon dioxide (CO2)
(C) Methane (CH4)
(D) Hydrogen sulphide (H2S).
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