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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Honey contain glucose and fructose along with some other ingredients, it has greater viscosity due to____________...?

(A) hydrogen bonding
(B) irregular shape of the molecules

(C) irregular shape of the molecules and strong inter-molecular forces
(D) greater molecular size

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Water covers __________ of the Earth’s surface...?

(A) 61%
(B) 67%

(C) 71%
(D) 76%

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A magnifying glass is also called ____...?

(A) Endoscope
(B) Simple microscope

(C) Compound microscope
(D) Telescope

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How many grams in a pound...?

(A) 451
(B) 453

(C) 455
(D) 457

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The ozone molecule contains which type of bonding__________...?

(A) Dative bond
(B) Covalent bond

(C) Both A and B
(D) Ionic Bond

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The point that lies directly above the source of an earthquake is known as _______________ ...?

(A) Earthquake Center
(B) Epicenter

(C) Gravitational Center
(D) Geological Center

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International date line passes through which strait...?

(A) Malacca Strait
(B) Adam Strait

(C) Bering Strait
(D) Java Strait

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The scientific study of insects is known as _______...?

(A) Ichthyology
(B) Entomology

(C) Zoology
(D) Botany

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what is anthracite...?

(A) Carbon
(B) Hard coal

(C) Ammonia
(D) None of these

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