Chemistry

If the elements X and Y have atomic numbers 11 and 17 respectively, what type of bond can they form?

A. Dative B. Covalent C. Ionic D. Metallic Correct Answer: Option C - Ionic

5 years ago

What volume of hydrogen would be left over when 300cm³ of oxygen and 1000cm³ of hydrogen are exploded in a sealed tube?

2H2(g) + O2(g) → 2H2O(g) A. 200cm ³ B. 400cm ³ C. 600cm ³ D. 700cm ³ Correct Answer: Option B…

5 years ago

Which of the below can correctly be listed as evidences for the particulate nature of matter?

l . Evaporation. ll. Sublimation. lll. Diffusion. IV. Brownian motion. A. I and lll only B. ll and lV only…

5 years ago

An increase in the pressure exerted on gas at a constant temperature results in?

A. a decrease in the number of effective collisions B. a decrease in volume C. an increase in the average…

5 years ago

Which of the following methods can be used to obtain pure water from a mixture of sand, water and methanoic acid?

A. netralization with NaOH, followed by filtration B. neutralization with NaOH, followed by distillation C. fractional distillation D. filtration followed…

5 years ago

The radioactive emission with the least ionization power is?

A. α−particles B. X-rays C. γ−rays D. β−rays Correct Answer: Option C - γ − rays

5 years ago

How many unpaired electron are in the p-orbitals of a fluorine atom?

A. 3 B. 0 C. 1 D. 2 Correct Answer: Option C - 1

5 years ago

The compound below is an?

A. alkanone B. alkanoate C. alkanal D. akanol Correct Answer: Option A - alkanone

5 years ago

Which of the following compounds in solution will turn red litmus paper blue?

A. A B. B C. C D. D Correct Answer: Option C = C

5 years ago

The dehydration of ammonium salt of alkanoic acids produces a compound with the general formula?

A. A B. B C. C D. D Correct Answer: Option B = B

5 years ago
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