Chemistry

The halide used widely in photography is?

A. ammonium chloride B. calcium chloride C. silver bromide D. sodium bromide E. aluminium fluoride Correct Answer: Option C -…

5 years ago

The reactions ethyne are mainly?

A. substitution reactions B. addition reactions C. addition polymerization D. catalytic hydrogenation E. catalytic halogenation Correct Answer: Option B -…

5 years ago

The following acids are monobasic except _______?

A. methanoic acid B. dioxonitrate lll acid C. ethanedioic acid D. oxochlorate (l) acid E. hydrobromic acid Correct Answer: Option…

5 years ago

Which of the following processes is a physical reaction?

A. Electrolysis B. Hydrolysis C. Allotropic change D. Neutralization E. Corrosion Correct Answer: Option C - Allotropic change

5 years ago

Methanol is obtained from wood by?

A. esterification B. bacterial decomposition C. combustion D. fractional distillation E. destructive distillation Correct Answer: Option E - destructive distillation

5 years ago

When steam is passed over white-hot coke, the products are?

A. carbon (IV) oxide and nitrogen B. carbon (II) oxide and hydrogen C. carbon (ll) oxide and nitrogen D. carbon…

5 years ago

The product of the reaction between ethanol and excess acidified K2Cr2O2 is?

A. ethanal B. ethylethanoate C. ethanoic acid D. ethyne E. ethanedioic acid Correct Answer: Option C - ethanoic acid

5 years ago

Which of the following is correct about the electrons in the 1s orbital? They

A. have the same spin B. are easier to remove than those in the 2p orbital C. are closest to…

5 years ago

Which of the following gases are diatomic except?

A. nitrogen B. helium C. hydrogen D. fluorine E. oxygen Correct Answer: Option B - helium

5 years ago