Which is the first element depicted on the Periodic Table...? Mcqs

Latest MCQs

Which is the first element depicted on the Periodic Table...?

(i) Hydrogen
(ii) Aluminum

(iii) Oxygen
(iv) Gold

Latest MCQs

Acid rain contains high levels of _____...?

(i) Sulphuric Acid
(ii) Nitric Acid

(iii) Oxalic Acid
(iv) Both A and B

Latest MCQs

What is the chemical formula of washing soda...?

(i) Na2CO3
(ii) NaHCO3

(iii) Na2CO3
(iv) Na2CO3.10H2O

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Abdul Qadeer Khan died on ______...?

(i) 09 October 2021
(ii) 10 October 2021

(iii) 11 October 2021
(iv) 13 October 2021

Latest MCQs

Plants exhale at night time which gas...?

(i) O2
(ii) H20

(iii) Co1
(iv) CO2

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Cooking gas is also called...?

(i) Butane
(ii) Hexane

(iii) Propane
(iv) LPG

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Nitrogen boils at a temperature of:...?

(i) -96 °C
(ii) -196 °C

(iii) -296 °C
(iv) -310 °C

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Which of the following is not a chemical reaction...?

(i) Burning of a paper
(ii) Conversion of Water into stream

(iii) Digestion of food
(iv) Burning of coal

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Which of the following is an electrolyte...?

(i) NaCl
(ii) Oil

(iii) Ethanol
(iv) None of these

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Brass gets discolored in air because of the presence of which of the following gases in air:...?

(i) Carbon dioxide
(ii) Hydrogen sulfide

(iii) Nitrogen
(iv) Oxygen

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