Chemistry

A compound contains 31.91% potassium; 28.93% chlorine and the rest oxygen. What is the chemical formula of the compound? [K = 39, Cl = 35.5, O = 16]

A. KClO4 B. KClO C. KClO2 D. KClO3 Correct Answer: Option D - KClO3 Explanation K- (31.91%), Mole = 31.91/39…

4 years ago

Which of the following is found in cotton?

A. Starch B. Cellulose C. Fat D. Oil Correct Answer: Option B - Cellulose

4 years ago

The process by which atoms are rearranged into different molecular structure in the petroleum refining process is referred to as?

A. catalytic cracking B. hydrocracking C. polymerization D. reforming Correct Answer: Option D - reforming

4 years ago

The type of reaction that is peculiar to benzene is?

A. addition B. hydrolysis C. polymerization D. substitution Correct Answer: Option D - substitution

4 years ago

The formula for ethyl butanoate is?

A. C3H7COOC2H5 B. C2H5COOC3H7 C. C4H9COOC2H5 D. C2H5COOC4H9 Correct Answer: Option A - C3H7COOC2H5 Explanation Ethyl butyrate, also known as…

4 years ago

The leachate of a certain plant ash is used in local soap making because it contains?

A. sodium chloride and potassium hydroxide B. sodium hydroxide C. potassium hydroxide D. soluble carbonates and hydrogen carbonates Correct Answer:…

4 years ago

How many isomers does pentane have?

A. 6 B. 5 C. 4 D. 3 Correct Answer: Option D - 3

4 years ago

Ethene reacts with hydrogen bromide to give?

A. CH2Br2 B. CH3CH2Br C. C2H2Br2 D. CHBr2 Correct Answer: Option B - CH3CH2Br

4 years ago

The modern process of manufacturing steel for iron is by?

A. treatment with acids B. oxidation C. blast reduction D. treatment with alkanal Correct Answer: Option C - blast reduction

4 years ago

Chlorine gas turns a damp starch-iodide paper?

A. pink B. colourless C. red D. dark blue Correct Answer: Option D - dark blue

4 years ago
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