Rate of evaporation of petrol is greater than that of water at room temperature because:...? Mcqs

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Rate of evaporation of petrol is greater than that of water at room temperature because:...?

(A) petrol molecules do not have any hydrogen bond
(B) petrol is an organic compound

(C) water molecules have small size
(D) petrol molecules have greater size

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Garnet is a______________...?

(A) Sedimentary rock
(B) Igneous rock

(C) Mineral
(D) None of these

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Percentage of water in an apple is__________...?

(A) 84%
(B) 90%

(C) 66%
(D) None of these

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The life cycle of the frog is...?

(A) Frogspawn→tadpoles→frog→froglet
(B) Frogspawn→froglet→frog→tadpoles

(C) Frogspawn→frog→tadpoles→froglet
(D) Frogspawn→tadpoles→froglet→frog

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Solution of biological problem starts with ______...?

(A) Hypothesis
(B) Experimentation

(C) Conclusion
(D) Observation

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To illuminate the inaccessible places in the tooth, dentists use ______...?

(A) Convex mirror
(B) Concave lens

(C) Convex lens
(D) Concave mirror

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All are involve in classification except...?

(A) Analogous
(B) Homologous

(C) Cytology
(D) Genetics

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Ozone layer exist above the earth about ______...?

(A) 35km
(B) 25km

(C) 40km
(D) 30km

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One of the main function of the earth’s ozone layer is to ...?

(A) Prevent global warming
(B) Filter out ultraviolet rays

(C) Absorb pollution
(D) All of the above

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The weight of an average human male brain is about...?

(A) 1 gr
(B) 1200 gr

(C) 1350 gr
(D) 1500 gr

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