Which type of the following chemical reaction is CaO + CO2 → CaCO2:...? Mcqs

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Which type of the following chemical reaction is CaO + CO2 → CaCO2:...?

(A) Combination Reaction
(B) Decomposition Reaction

(C) Neutralization Reaction
(D) None

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The speed of the sound in air is ______...?

(A) 143 m/s
(B) 243 m/s

(C) 343 m/s
(D) 443 m/s

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Number of electrons lost by atoms of group IIIA equals ______...?

(A) 1
(B) 2

(C) 3
(D) 4

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Who invented the first battery...?

(A) Alessandro volta
(B) Tim Berner

(C) Rob Stothard
(D) Georges Leclanche

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Humans can hear in the range of ______ to _______Hertz (Hz)....?

(A) 10 Hz to 10,000 Hz.
(B) 20 Hz to 20,000 Hz.

(C) 30 Hz to 30,000 Hz.
(D) 40 Hz to 40,000 Hz.

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Entomology Is the Study of___________...?

(A) worms
(B) insects

(C) Animals
(D) All of these

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The comparison of two values is called _____...?

(A) Ratio
(B) Proportion

(C) Graph
(D) Table

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The depletion of ozone layer has been caused mainly by _____...?

(A) The release of industrial waste
(B) The deforestation of large area land

(C) The release of chlorofluorocarbons into the atmosphere
(D) None of these

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In which stage of mitosis where chromosomes reach towards their respective poles...?

(A) Metaphase
(B) Anaphase

(C) Telophase
(D) Prophase

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Ascorbic Acid is found in ______...?

(A) Mangoes and Grapes
(B) Alma and Citrus Fruits

(C) Bananas and Apples
(D) Pineapples and Watermelon

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