Comets are made mostly of ice and dust. As comets get close to the sun, they start to “melt” and release what...? Mcqs

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Comets are made mostly of ice and dust. As comets get close to the sun, they start to “melt” and release what...?

(A) Steam and dust
(B) Gas and dust

(C) Steam, gas and dust
(D) None of the above

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The expected number of RBCs in a single drop, or microliter, of blood is _________ million in Men....?

(A) 4.5 to 6.2 million
(B) 3.4 to 6.8 million

(C) 3.2 to 7.2 million
(D) 4.0 to 5.2 million

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Diffusion is a _____ process, which does not require energy input....?

(A) Active
(B) Fast

(C) Passive
(D) Slow

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Intensity of gravitational field of earth is maximum at...?

(A) Poles
(B) Equator

(C) Center of earth
(D) Surface

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Which part of a D.C motor reverses the direction of current through the coil every half-cycle...?

(A) The armature
(B) The commutator

(C) The brushes
(D) The slip rings

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What regulates the flow of water through the xylem...?

(A) Passive transport by the endodermis
(B) The number of companion cells in the phloem

(C) The evaporation of water from the leaves
(D) Active transport by sieve-tube membrane

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Examples of Monosaccharides are ___________....?

(A) Glucose
(B) Galactose

(C) Fructose
(D) All of these

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Main Control System of our body is _____...?

(A) Nervous System
(B) Brain

(C) Heart
(D) Lungs

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Which of the following are made up of two or more substances that are not chemically combined...?

(A) Compounds
(B) Elements

(C) Solutions
(D) Mixtures

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The lens which refract the parallel rays of light are called ____...?

(A) Diverging Lens
(B) Prim

(C) Cylindrical Lens
(D) Converging Lens

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