Question

1- Which of the following is a common characteristic of a covalent compound? A High melting point. B Conducts electricity when it is in the molten state. C Consists of molecules. D Always soluble in water.
2-Ammonium hydroxide will produce a reddish brown precipitate when added to
a solution of :
A CuSO 4 B Zn(NO 3)2 C FeSO 4 D FeCl 3
3- A salt which in solution gives a bluish white precipitate with NaOH solution
and a white precipitate with BaCl 2 solution is:
A CuSO 4 B FeSO 4 C Fe 2 (SO 4)3 D CuCl 2

Answer 1

Answers with respect to chemical compounds are written below-

1- Which of the following is a common characteristic of a covalent compound?

A High melting point

C Consists of molecules.

Covalent bonds are the interaction where bonds are formed by sharing of pair of electrons. They do not have ions involved hence do not conduct electricity.

2-Ammonium hydroxide will produce a reddish brown precipitate when added to a solution of :

C FeSO 4

Precipitate is formed when insoluble product forms. Fe(OH)3 is the product which remains insoluble.

3- A salt which in solution gives a bluish white precipitate with NaOH solution and a white precipitate with BaCl 2 solution is:

A CuSO 4

Cu(Cl)2 is the product that forms on the mentioned reaction.

Answer 2

Answer:The answer is (c) consists of molecules..