Chemistry

Which of the following compounds is a basic salt?

A. Mg(NO3)2 B. (NH4)2SO4 C. K4Fe(CN)6 D. Zn(OH)CI Correct Answer: Option D D. Zn(OH)CI

6 years ago

Consider the reaction represented by the equation: Ca(OH)2(aq) + CO2(g) → CaCO3(s) + H2O(l). In the reaction above, CO2 acts as

A. an acidic oxide B. an oxidizing agent C. a basic oxide D. a dehydrating agent Correct Answer: Option A…

6 years ago

In which of the following compound (s) will heat be absorbed on adding water? l. KNO3 II. Concentrated H2SO4 III. NH4CI

A. I only B. lll only C. l and lll only D. ll and lll only Correct Answer: Option B…

6 years ago

Which of the following statements is true of the molecules of a gas under ideal conditions? The molecules

A. move at random B. undergo inelastic collisions C. attract each other D. occupy a large volume Correct Answer: Option…

6 years ago

Which of the following gases is light than air?

A. CO2 B. SO2 C. HCI D. NH3 Correct Answer: Option D D. NH3

6 years ago

When air is successively passed through sodium hydroxide solution, alkaline pyrogallol and then concentrated tetraoxosulphate (VI) acid, its remaining components are?

A. oxygen and water vapour B. oxygen and nitrogen C. carbon (IV) acid and noble gases D. nitrogen and noble…

6 years ago

What is the IUPAC name of the compound represented by the molecular formula NaCIO4?

A. Sodium tetraoxochlorate (l) B. Sodium tetraoxochlorate (IV) C. Sodium tetraoxochlorate (VI) D. Sodium tetraoxochlorate(VII) Correct Answer: Option D D.…

6 years ago

Which of the following species does not contain a co-ordinate bond?

A. AI2CI6 B. CCI4 C. H3O+ D. NH4+ Correct Answer: Option A A. AI2CI6

6 years ago

Which of the following compounds has hydrogen bonds between its molecules?

A. HF B. HBr C. HCI D. HI. Correct Answer: Option A A. HF

6 years ago

If the difference between the electronegativities of two elements is large, the type of bond that can be formed between them is?

A. covalent B. dative C. ionic D. metallic Correct Answer: Option C C. ionic

6 years ago
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