A Periscope uses two plane mirrors one above the other at ____...? Mcqs

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A Periscope uses two plane mirrors one above the other at ____...?

(A) 30°
(B) 45°

(C) 60°
(D) 90°

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A magnifying glass is also called ____...?

(A) Endoscope
(B) Simple microscope

(C) Compound microscope
(D) Telescope

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The permanent hardness of water is due to presence ______...?

(A) MgSO4
(B) Mg(HCO3)₂

(C) CA(HCO3)2
(D) All of these

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It used to assess concentration or amount of given atomic, molecular or ionic chemical...?

(A) Chromatography
(B) Conductometry

(C) Spectroscopy
(D) Potentiometry

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Carrot is good source of Vitamin _______...?

(A) Vitamin A
(B) Vitamin B

(C) Vitamin C
(D) Vitamin D

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Butter is example of solution...?

(A) Gas-liquid
(B) Solid-liquid

(C) Liquid-solid
(D) Gas-solid

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The hard, solid rocks, whose composition or texture has been changed by heat or pressure in the Earth are called____________...?

(A) Sedimentary rocks
(B) Metamorphic rocks

(C) Igneous rocks
(D) All of the above

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The rashes and athlete's foot are caused by which infection...?

(A) Bacterial
(B) Fungal

(C) Viral
(D) None of these

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Pluto is known as dwarf planet because which of the following reason/s:...?

(A) It has negligible mass
(B) It has not nearly round shaped

(C) It does not have always same neighbouring planet
(D) All of the above

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In an oxidation process 14135KJ energy is release, how many moles of glucose consume during this process...?

(A) 1
(B) 3

(C) 5
(D) 10

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