Answer:
Ketone
Explanation:
The reaction between 1-hexyne and mercuric sulphate in the presences of aqueous sulphuric acid is a reaction that leads to the formation of a product containing a carbonyl group(a ketone in this case).
This reaction occurs in alkynes but the product formed depends on the structure of the alkyne; an aldehyde or ketone may be formed depending on the structure of the alkyne.
<u>Answer:</u> The molarity of calcium hydroxide in the solution is 0.1 M
<u>Explanation:</u>
To calculate the concentration of base, we use the equation given by neutralization reaction:

where,
are the n-factor, molarity and volume of acid which is 
are the n-factor, molarity and volume of base which is 
We are given:

Putting values in above equation, we get:

Hence, the molarity of
in the solution is 0.1 M.
Answer:

Explanation:
Empirical formula of ionic compound formed by two ions
and
is
(for
) of AB (for x = y)
The above empirical formula is in accordance with charge neutrality principle
Here each cation (
and
) can form two ionic compounds by combining with two given anions (
and
).
So the four ionic compounds are: 
Covalent bond , hopefully this help :) explanation : .....