What is the Chemical formula of Zinc Hydroxide _________ ...? Mcqs

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What is the Chemical formula of Zinc Hydroxide _________ ...?

(A) Zn(OH)2
(B) ZNO2

(C) Zn2(OH)3
(D) ZnOH

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Carpology is a discipline devoted to the study of what...?

(A) Corbons
(B) Cubes

(C) Seeds and fruits
(D) Infertile soils

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Which is not a cause of water pollution...?

(A) Gases from household materials
(B) Sewage water from homes

(C) Untreated water from industries
(D) Water runoff from agriculture

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Ring planet is Saturn; least dense and 2nd largest planet is_________...?

(A) Jupiter
(B) Saturn

(C) Neptune
(D) Mercury

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The field of specialization of famous Muslim scientist Abu Usman Aljahiz was...?

(A) Botany
(B) Zoology

(C) Astronomy
(D) None

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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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Which planets rotate in the opposite direction of the other planets...?

(A) Saturn and Jupiter
(B) Jupiter and Neptune

(C) Saturn, Jupiter and Mercury
(D) Venus and Uranus

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The sun has a __________ year solar cycle during which its activity increases and decreases....?

(A) 10
(B) 11

(C) 12
(D) 13

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Function of restriction enzymes...?

(A) Join DNA fragments
(B) Cut the DNA

(C) Replicate the DNA
(D) Unwind the DNA

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The blue colour of clear sky is due to_______________...?

(A) Reflection of light
(B) Refraction of light

(C) Diffraction of light
(D) Dispersion of light

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