The chemical name of “Acid” (Tezaab) is___________...? Mcqs

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The chemical name of “Acid” (Tezaab) is___________...?

(A) Sulfuric acid
(B) Sodium chloride

(C) Citric Acid
(D) None of these

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Hailey’s comet is visible after every_________...?

(A) 84 years
(B) 76 years

(C) 1000 years
(D) 365 years

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The process of separation of solute and solvent from the mixture is called...?

(A) Decantation
(B) Sedimentation

(C) Filtration
(D) Centrifugation

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Animal and Plant bodies contain ________ of water....?

(A) 75%
(B) 72%

(C) 70%
(D) 73%

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Cutting down of trees called...?

(A) Afforestation
(B) Conversation

(C) Deforestation
(D) Reforestation

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Chemical formula shows ____...?

(A) Number of atoms of each elements
(B) Number of atoms in a compound

(C) Number of atoms in a molecule
(D) None

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The lowest temperature ever recorded on the Earth is...?

(A) –89.2 °C
(B) –86.2 °C

(C) –83.2 °C
(D) –92.2 °C

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Which of the following is an example of a chemical reaction...?

(A) Water freezing into ice
(B) Sand settling to the bottom of a pool

(C) Leaves changing colors in the fall
(D) A rock rolling down a hill

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Which of the following cutting conditions greatly affects the tool wear...?

(A) Cutting speed
(B) Feed

(C) Depth of cut
(D) None of the above

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Role of biotechnology in the production of food based on ___________...?

(A) Decomposition
(B) Respiration

(C) Digestion
(D) Fermentation

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