Malaria Polio Dengue fever and influenza are example of:

(A) Deficiency Diseases
(B) Infectious Diseases
(C) Physiological Diseases
(D) None of these

The answer is (B) Infectious Disease

Biosphere is defined as:

(A) Part of the earth, water and atmosphere inhabited by living organism
(B) Part of Soil inhabited by animals and Plants
(C) Atmosphere in which life exists
(D) None of these

The answer is (A) Part of the Earth, Water and Atmosphere inhabited by Living Organism

In which layer of the atmosphere are most of the clouds formed?

In which layer of the atmosphere are most of the clouds formed?

(A) Mesosphere
(B) Troposphere
(C) Stratosphere
(D) None of these

The answer is (B) Troposhpere

The hardness of a hammer made of aluminum is due to the presence of

(A) Ionic Bond
(B) Covalent Bond
(C) Metallic Bond
(D) None of these

The answer is (C) Metallic Bond

The extraction of metal from the ore is done by Smelting which involves:

(A) Heating and Chemical Reduction
(B) Heating and Oxidation
(C) Heating and Electrolysis
(D) None of these

The answer is (A) Heating and Chemical Reduction

Why does the sky appear blue?

(A) Due to scattering of light from atmosphere
(B) Due to color of cans in the atmosphere
(C) Due to the reflection from Earth’s Surface
(D) None of these

The answer is (A) Due to scattering of light from atmosphere

The term Light year refers to:

(A) Time that earth takes to complete one revolution around the Sun
(B) Distance of earth from the sun at which intensity of light is maximum
(C) Speed of light expressed in miles per year
(D) None of these

The answer is (D) None of these (Unit of Distance)

Contour is a measure of?

(A) Topography
(B) Rain Fall
(C) Temperature
(D) Pressure

The answer is (A) Topography

Deficiency of Vitamin-A results in ___?

(A) Night Blindness
(B) Rickets
(C) Scurvy
(D) Hair Fall

The answer is (A) Night Blindness

Solid which undergoes sublimation is?

(A) Argon
(B) Iodine
(C) Sodium Chloride
(D) Water

The answer is (B) Iodine