A chips wrapper is 4.5 cm long and 5.9 cm wide. Its area upto significant figures will be...? Mcqs

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A chips wrapper is 4.5 cm long and 5.9 cm wide. Its area upto significant figures will be...?

(A) 30 cm^2
(B) 28 cm^2

(C) 26.55 cm^2
(D) 32 cm^2

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Which of the following is a five-carbon compound in the Kreb's cycle...?

(A) Fumaric acid
(B) Citric acid

(C) Malic acid
(D) Alpha-ketoglutarate

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An alloy is the homogeneous mixture of ______...?

(A) Two solid
(B) Two liquid

(C) Two gases
(D) Solid and liquid

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Which gas can turn lime water milky...?

(A) O2
(B) NO2

(C) CO2
(D) N2

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Which of the following is responsible for largest amount of oxygen on earth...?

(A) Peat bogs
(B) Algae

(C) Trees
(D) None of these

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In winter an iron pipe feel colder than a wooden window . This is because wood is_______...?

(A) Conductor
(B) Non-Conductor

(C) Semi- Conductor
(D) Not a solid while iron is a solid

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Which of the following is not a part of Darwinism...?

(A) Over production
(B) Natural selection

(C) Inheritance for acquired characters
(D) Competition for survival

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How many teeth are there in human mouth...?

(A) 30
(B) 33

(C) 32
(D) 31

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Which one of the following elements the drum of a Photostat machine is made up of: _________...?

(A) Aluminium
(B) Selenium

(C) Barium
(D) None of these

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The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg...?

(A) 4 days
(B) 12 days

(C) 16 days
(D) 8 days

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