Which statement is incorrect about chemical reactions...? Mcqs

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Which statement is incorrect about chemical reactions...?

(A) States of matter does not change during chemical reactions
(B) Chemical reactions produce new substances

(C) Chemical reactions occur with the absorption or emission of energy
(D) Chemical reactions may be fast, moderate or slow

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Place directly above focus on Earth’s surface is known as _________...?

(A) Strike
(B) Comma

(C) Epicenter
(D) Origin

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The muscles, tissues and blood all are made up of____________...?

(A) Carbohydrate
(B) Proteins

(C) Vitamins
(D) Fats

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Deficiency of vitamin C will cause:__________...?

(A) Beri-Beri
(B) Architis

(C) Scurvy
(D) Night-blindness

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Human bone does not contain_________...?

(A) Calcium
(B) Chondroitin sulfate

(C) Boron
(D) phosphate

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In an acidic medium, methyl orange is orange (red) and in a basic medium, it is...?

(A) Red
(B) Yellow

(C) Pink
(D) Blue

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The unit of home electricity energy consumption is ...?

(A) Watt hour
(B) Joule hour

(C) Killowatt hour
(D) Kilo joule hour

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In which of the following processes is energy released ...?

(A) Respiration
(B) Photosynthesis

(C) Ingestion
(D) Absorption

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Select the odd one of the following...?

(A) Theory
(B) Law

(C) Hypothesis
(D) Ratio

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Scientific reasoning based on “if-then” statement called...?

(A) Inductive reasoning
(B) Deductive reasoning

(C) Scientific reasoning
(D) None

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