Which is the best indication that a chemical reaction has taken place...? Mcqs

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Which is the best indication that a chemical reaction has taken place...?

(A) Blue powder turns water blue
(B) Metal budding when placed in an unknown liquid

(C) A white substance dissolving in water
(D) None

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The scientific study of teeth is called ____________...?

(A) Odontology
(B) Ornithology

(C) Orthoepy
(D) Pedagogy

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UPS is now widely use in households. What does UPS stands for ...?

(A) Uniform Power Storage
(B) Universal Product Support

(C) Under Panel Storage
(D) Uninterruptible Power Supply

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The moon’s surface has been explored by how many astronauts...?

(A) 10
(B) 11

(C) 12
(D) 13

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What is the substance that causes undesirable change to the environment...?

(A) Climate Change
(B) Pollution

(C) Pollutant
(D) None

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All accurately known digits and first doubtful digit in an expression are known as...?

(A) Non-significant figures
(B) Significant figures

(C) Estimated figures
(D) Crossed figures

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In an oil lamp, the oil rises up in the wick due to...?

(A) Capillary action
(B) Atmospheric pressure

(C) Viscosity of oil
(D) Change in temperature

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Which is the outermost planet in the solar system...?

(A) Mercury
(B) Pluto

(C) Neptune
(D) Uranus

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Example of heterogeneous mixture is _______...?

(A) Sugar and water
(B) Sand and water

(C) Salt and water
(D) Ink and water

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Frog eggs are also called...?

(A) Spawn
(B) Froglet

(C) Tadpoles
(D) Adult

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