Which of the following would be most useful in testing if a substance is either an acid or a base...? Mcqs

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Which of the following would be most useful in testing if a substance is either an acid or a base...?

(A) pH indicator strips
(B) Acid-base indicator

(C) Litmus paper
(D) Filter paper

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Turpentine is obtained from___________...?

(A) Oak tree
(B) Pine tree

(C) Birch tree
(D) Lemon tree

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A mature, large ovary and seed are _____...?

(A) Stem
(B) Leaf

(C) Flower
(D) Fruit

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Which of the following can be used to reduce friction between moving parts of machines...?

(A) Sand
(B) Grease

(C) Gears
(D) Screws

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Medulla oblongata is a part of human ___________...?

(A) Heart
(B) Brain

(C) Liver
(D) Sex organ

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The chemical name of bauxite _______ ...?

(A) Aluminium Oxide
(B) Aluminium Chloride

(C) Aluminium Sulphite
(D) None of the above

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The instrument that measures temperature, pressure, and humidity at various altitudes in the atmosphere ___________...?

(A) Barograph
(B) Radiosonde

(C) Aneroid barometer
(D) Altimeter

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Colours of stars are due to their _____...?

(A) Temperature
(B) Size

(C) Distance
(D) Composition

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Select one the mismatched...?

(A) Protein → Amino acid
(B) Carbohydrate → Glucose

(C) Fats → Starch
(D) Nucleic acid → Nucleotide

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A fathom is equal to ________feets...?

(A) 6
(B) 5

(C) 4
(D) 3

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