Chemistry

Which of the following molecules is held together by hydrogen bond?

A. CH4 B. HBr C. H2SO4 D. HF Correct Answer: Option D - HF

5 years ago

The shape of the carbon (lV) oxide molecule is?

A. pyramidal B. linear C. angular D. tetrahedral Correct Answer: Option B = linear

5 years ago

What volume of carbon (ll) oxide is produced by reacting excess carbon with 10 dm³ of oxygen?

A. 5 dm³ B. 20 dm³ C. 15 dm³ D. 10 dm³ Correct Answer: Option B - 20 dm³

5 years ago

The presence of an impurity in substance will cause the melting point to?

A. be zero B. reduce C. increase D. be stable Correct Answer: Option B - reduce Explanation Impurities disrupt the…

5 years ago

Z in diagram below represents?

A. heat of reaction B. activation energy C. free energy D. entropy of reaction Correct Answer: Option A = heat…

5 years ago

The gas that is removed by the water in the flask is?

  A. O2 B. SO2 C. HCI D. H2 Correct Answer: Option C - HCI

5 years ago

What is the function of concentrated H2SO4 in the diagram below?

A. purify the gas B. dry the gas C. liquefy the gas D. remove odour Correct Answer: Option B =…

5 years ago

The IUPAC nomenclature of the compound below is?

  A. 2-bromo-3-chlorobutanol B. 3-bromo-2-chlorobutanol C. 3-chloro-2-bromobutanol D. 2-chloro-3-bromobutanol Correct Answer: Option D - 2-chloro-3-bromobutanol

5 years ago

The petroleum fraction that is used in heating furnaces in industries is?

A. diesel oil B. gasoline C. kerosene D. lubricating oil Correct Answer: Option A - diesel oil

5 years ago

The process of converting linear alkanes to branched chain and cyclic hydrocarbons by heating in the presence of a catalyst to improve the quality of petrol is referred to as?

A. refining B. cracking C. reforming D. blending Correct Answer: Option C - reforming

5 years ago
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