The isotope C-12 is present in abundance of _______...? Mcqs

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The isotope C-12 is present in abundance of _______...?

(A) 96.9%
(B) 97.6%

(C) 98.8%
(D) 99.7%

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Our atmosphere consists of__________ CO2...?

(A) 0.03 to 0.04% CO2
(B) 0.3 to 0.4% CO2

(C) 3 to 4% CO2
(D) None of these

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Marble and Slate are which type of rock...?

(A) Igneous
(B) Sedimentary

(C) Metamorphic
(D) Non of These

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Larva of Frog is also called...?

(A) Spawn
(B) Froglet

(C) Tadpoles
(D) Adult

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Which of the following elements is not present abundantly in earth’s crust ...?

(A) Silicon
(B) Radium

(C) Aluminum
(D) Carbon

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At what time of day is the relative humidity normally at a minimum ________________ ...?

(A) When the air temperature is highest
(B) Just before sunrise

(C) About midnight
(D) When the air temperature is lowest

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Which one of the following is a non-luminous object(s)...?

(A) Sun
(B) Stars

(C) Moon
(D) Fireflies

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A region on a longitudinal wave where the particles are furthest apart is called...?

(A) Rarefaction
(B) Compression

(C) Crest
(D) Trough

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The materials required for photosynthesis are _______...?

(A) Water (H2O) and Oxygen (O2)
(B) Water (H2O) and Carbon Dioxide (CO2)

(C) Carbon Dioxide (CO2) and Light Energy
(D) Glucose (C6H12O6) and Oxygen (O2)

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When parallel rays of light fall onto rough surface they are reflected in different directions and are scattered is called _____...?

(A) Regular Reflection
(B) Specular Reflection

(C) Diffused Reflection
(D) None

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