Chemistry

What is the molecular formula of a compound with empirical CH2O and vapour density of 90? [H = 1, C = 12, O = 16]

A. C4H8O2 B. C4H8O3 C. C6H10O5 D. C6H12O6 Correct Answer: Option D D. C6H12O6

6 years ago

When protein is heated to a high temperature it undergoes?

A. condensation B. denaturation C. hydrolysis D. polymerization Correct Answer: Option B B. denaturation

6 years ago

The electron configuration of carbon atom in its excited state is [ 6C]

A. 1s² 2s² 2px¹ 2py¹ B. 1s² 2s² 2px² 2pyº C. 1s¹ 2s² 2px¹ 2py¹ 2pz¹ D. 1s² 2s¹ 2px¹…

6 years ago

Dry hydrogen chloride when dissolved in methylbenzene?

A. turns blue litmus paper red B. turns red litmus paper blue C. does not affect litmus paper D. bleaches…

6 years ago

The major product in the solvay process is?

A. NaOH B. Na2CO3 C. NH3 D. H2SO4 Correct Answer: Option B B. Na2CO3

6 years ago

A consequence of global warming is except?

A. air pollution B. flooding C. increased humidity D. low rainfall Correct Answer: Option B B. flooding

6 years ago

Which of the following alloys does not contain copper?

l. Brass II. Bronze III. Steel A. l only B. ll only C. lll only D. ll and lll only…

6 years ago

Which of the following substances is the anode in the dry Leclanche cell?

A. Carbon rod B. Muslin bag C. The seal D. Zinc container Correct Answer: Option D D. Zinc container

6 years ago

A catalyst increases the rate of chemical reaction by?

A. decreasing the temperature of the reaction B. decreasing the activation energy of the reaction C. increasing the surface area…

6 years ago

Which of the following factors will affect the rate of the reaction represented by the equation? 2HCI(aq) + CaCO3(s) → CaCI2(aq) + H2O (I) + CO2(g)

l. Pressure ll. Concentration III. Nature of reactants IV. Temperature A. l and ll only B. ll, lll and IV…

6 years ago