Chemistry

During water treatment for town supply, water is passed through layers of send beds in order to?

A. soften the water B. filter the water C. decolorize the water D. destroy the germs in the water E.…

5 years ago

The component of air that can be removed by alkaline pyrogallol solution is?

A. oxygen B. nitrogen C. water vapour D. carbon (IV) oxide E. noble gases Correct Answer: Option A - oxygen

5 years ago

What type of reaction was involved between compound X and concentrated hydrochloric acid?

Use the following information to answer this question. Compound X was boiled with concentrated hydrochloric acid for a long time.…

5 years ago

One of the products was found to be a sugar. Compound X was probably?

Use this following information to answer this question. Compound X was boiled with concentrated hydrochloric acid for a long time.…

5 years ago

When excess carbon (lV) oxide is passed into lime water, the turbidity produced initially disappears due to the formation of

A. calcium oxide B. calcium carbide C. calcium hydrogentrioxocarbonate (IV) D. trioxocarbonate (IV) acid E. calcium trioxocarbonate (IV) Correct Answer:…

5 years ago

What amount of hydrogen will be required for complete hydrogenation of one mole of pent-3-yne?

A. 1 mole B. 2 moles C. 3 moles D. 5 moles E. 6 moles Correct Answer: Option B -…

5 years ago

When acidified KMnO4 solution is decolorised by ethene, the gas acts as?

A. a straight-chain hydrocarbon B. a saturated hydrocarbon C. a reducing agent D. a dehydrating agent E. an oxidizing agent…

5 years ago

On exposing palm wine to air for some days, it becomes sour owing to the conversion of?

A. glucose to ethanol B. glucose to gluconic acid C. ethanol to ethanoic acid D. ethanol to ethanal E. palm…

5 years ago

Which of the following exhibits resonance?

A. Benzene B. Butane C. Pentene D. Octana E. Hexene Correct Answer: Option A - Benzene

5 years ago

If the third member of a homologous series is C3H8, the fifth member will be?

A. C5H8 B. C5H9 C. C5H10 D. C5H11 E. C5H12 Correct Answer: Option E - C5H12

5 years ago