In plants, water and minerals are transported from roots to the leaves by ____...? Mcqs

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In plants, water and minerals are transported from roots to the leaves by ____...?

(A) Phloem
(B) Xylem

(C) Stomata
(D) Cambium

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Water vapor is ______________...?

(A) A gas
(B) A cloud droplet

(C) A rain drop
(D) A snowflake

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A (an) ______ is a pure substance which contains only one type of molecule made up of atoms of more than one element....?

(A) Compound
(B) Element

(C) Molecule
(D) Atom

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the delicate lungs are protected by a cage that is called ______...?

(A) luvcage
(B) Ribcage

(C) both A & B
(D) None of these

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According to Big Bang Theory, the Universe began about __________ billion years ago....?

(A) 10 – 20
(B) 20 – 30

(C) 30 – 40
(D) 40 – 50

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Atoms that gain electron will become negatively charged ion and they are known as...?

(A) Ion
(B) Cation

(C) Isotope
(D) Anion

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The reaction which releases or gives off heat is called...?

(A) Exothermic Reaction
(B) Endothermic Reaction

(C) Oxidation Reaction
(D) Neutralization Reaction

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Water waves pass from deep into the shallow region and are then refracted. The characteristics of waves which will remain constant is _____...?

(A) Direction
(B) Frequency

(C) Speed
(D) Wavelength

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The soul of chemistry is dealing with___________...?

(A) Internal structural changes in matter
(B) Composition of matter

(C) Properties of matter
(D) Composition and properties of matter

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1 light year = ...?

(A) 9.5×106 km
(B) 9.5×109 km

(C) 9.5×1012 km
(D) 9.5×1018 km

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