Among the following, which substance is not a compound...? Mcqs

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Among the following, which substance is not a compound...?

(A) H2O
(B) Mg

(C) CO2
(D) NaCl

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The artificial manipulation, medication and recombination of DNA ____...?

(A) Genetic engineering
(B) Biotechnology

(C) Molecular Biology
(D) Genetics

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When a bullet penetrates into a target, the kinetic energy of a bullet is converted into ...?

(A) Potential energy
(B) Heat energy

(C) Both B&D
(D) Mechanical energy

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Which Planet has purple rocks according to NASA ...?

(A) Jupitar
(B) Neptune

(C) Earth
(D) Mars

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The phenomenon of Aurora Borealis, the display of red and green lights in northern hemisphere is due to radiations from____________ ...?

(A) Ionosphere
(B) Troposphere

(C) Mesosphere
(D) Stratosphere

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_______________ causes biomagnification problem in the Ecosystem....?

(A) Lead
(B) Mercury

(C) Chromium
(D) Copper

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Ionic crystals have ______...?

(A) High melting points
(B) Moderate melting points

(C) Low melting points
(D) None of above

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What are the three subatomic particles of an atom...?

(A) Protons,Neutrons & Electrons
(B) Protons,Nucleus & Electrons

(C) Protons,Nucleus & Elements.
(D) Elements,Nucleus & Protons

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How many proton and neutron are present in the nucleus of Tritium isotope...?

(A) 2 and 1
(B) 1 and 2

(C) 3 and 2
(D) 4 and 1

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In an Electric circuit when Electrons move from low to high potential they will _______...?

(A) Gain Energy
(B) Lose their identity

(C) Lose Energy
(D) Gain Potential

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