A mixture of sand and naphthalene can be separated by ________ ...? Mcqs

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A mixture of sand and naphthalene can be separated by ________ ...?

(A) Chromatography
(B) Fractional distillation

(C) Sublimation
(D) None of these

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Telephone was invented by__________...?

(A) Vint Cerf
(B) Charles Babbage

(C) Edison
(D) Alexander Graham Bell

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Which planet in our solar system has the most gravity...?

(A) Jupiter
(B) Mercury

(C) Venus
(D) Neptune

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Resolution of a microscope is defined as the smallest distance between _____ points....?

(A) One
(B) Two

(C) Three
(D) Four

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Which one of the following forms weak electrolyte solution with water...?

(A) CH₃COOH
(B) H₂SO₄

(C) NaCl
(D) None of these

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Which insect can survive without a head for one or more weeks...?

(A) Ladybird
(B) Bee

(C) Cockroach
(D) Termite

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Plants in the garden that are usually pollinated by ______ bear brightly colored flowers....?

(A) Animals
(B) Water

(C) Sunlight
(D) Insects

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What do friction forces between the air and a moving object cause...?

(A) Speed increase
(B) Weight decrease

(C) Resistance
(D) Energy gain

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How many moons does Neptune have...?

(A) 63
(B) 12

(C) 19
(D) 14

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It is impossible for a type of O+ baby to have a type of____________mother:...?

(A) AB-
(B) O-

(C) O+
(D) none

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