The main culprit of greenhouse effect is Carbon dioxide. But which is the second element contributing most to greenhouse effect...? Mcqs

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The main culprit of greenhouse effect is Carbon dioxide. But which is the second element contributing most to greenhouse effect...?

(A) Nitrogen Dioxide (NO2)
(B) Chlorofluorocarbons (CFCs)

(C) Methane (CH4)
(D) High-fructose corn syrup (HFCs)

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What is the average distance of the moon from earth...?

(A) 384,400 km
(B) 350,000 km

(C) 380,200 km
(D) 384,500 km

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The key component of the scientific process is ______...?

(A) Hypothesis
(B) Observation

(C) Question
(D) Experimentation

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Big Bang was an explosion that occurred ...?

(A) 10 Billion years ago
(B) 15 Billion years ago

(C) 20 Billion years ago
(D) 25 Billion years ago

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Which of the following bonds are weakest in nature...?

(A) Single bond
(B) Double bond

(C) Triple bond
(D) Hydrogen bond

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An atom is_____________...?

(A) smallest indivisible particle in an element
(B) smallest particle of an element which can undergo a chemical reaction

(C) building block of an element
(D) always smaller than molecule

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Which statement is true for limiting frictional force...?

(A) It is greater than rolling friction
(B) It is greater than sliding friction

(C) It is greater than kinetic friction
(D) All are true

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Main use of salt in diet is to : ___________...?

(A) ease the process of cooking
(B) increase the taste

(C) produce small amount of hydrochloric acid required for digestion
(D) inclease solubility of food particles in water

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Total internal reflection of light is possible when light enters from ____...?

(A) Air to water
(B) Glass to glass

(C) Water to air
(D) Air to glass

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In which part of the eye lies the pigment that decides the colour of the eyes of a person___...?

(A) Retina
(B) Iris

(C) Cornea
(D) Pupal

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