What is the chemical formula for Sodium carbonate _______ ...? Mcqs

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What is the chemical formula for Sodium carbonate _______ ...?

(A) Na3CO2
(B) CNa2O3

(C) Na2CO3
(D) Na3CO3

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All of the following statements are incorrect except:...?

(A) Precision and accuracy should go side by side in a scientific work
(B) Scientific work must be precise, accuracy is not essential

(C) Scientific work must be accurate, precision is not essential
(D) Calculations must be made before any experiment

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The average acceleration caused by gravity per second is____________...?

(A) 22 feet
(B) 32 feet

(C) 52 feet
(D) 42 feet

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This in-between phase of stellar nurseries and star formation in stellar evolution is when the gathered dust is still condensing to form a star....?

(A) Alpha Stage
(B) Stellar Genesis

(C) Protostar
(D) Star of Adam

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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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Global winds towards western direction are known as:...?

(A) Trade winds
(B) Western winds

(C) Reynolds wind
(D) None of these

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Carbon dioxide dissolution in water, actually represents solute and solvent combination of _____...?

(A) Liquid-liquid solution
(B) Solid-liquid solution

(C) Gas-liquid solution
(D) Solid-solid solution

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The transfer of pollen grains from anther of a flower to the stigma of the same or another flower is called...?

(A) Fertilization
(B) Reproduction

(C) Pollination
(D) Photosynthesis

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Ozone layer exist above the earth about ______...?

(A) 35km
(B) 25km

(C) 40km
(D) 30km

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What is the main function of red blood cells in the human body...?

(A) Transportation of carbon monoxide
(B) Transportation of oxygen

(C) Transportation of carbon dioxide
(D) Transportation of methane

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