Chemistry

What mass of 95% pure CaCO₃ will be require neutralise 50 mL of 0.5M HCl solution according to the following reaction?
CaCO₃(s) + 2HCl(aq) → CaCl₂(aq) + CO₂(g) + 2H₂O(l) [Calculate upto second place of decimal point]

Which statement regarding polymers is not correct?

Which one is not correct mathematical equation for Dalton's Law of partial pressure? Here p = total pressure of gaseous mixture.

Amongst the following which one will have maximum lone pair -lone pair' electron repulsions?

RMgX + CO₂ --(dry ether)--> Y --(H₃O⁺)--> RCOOH

What is Y in the above reaction?

Identify the incorrect statement from the following.

The given graph is a representation of kinetics of a reaction.

The y and x axes respectively are for zero and first order reactions, respectively are:

Given below are two statements:

Statement I:
The acidic strength of monosubstituted nitrophenol is higher than phenol because of electron withdrawing nitro group.

Statement II:
o-nitrophenol, m-nitrophenol and p-nitrophenol will have same acidic strength as they have one nitro group attached to the phenolic ring.

In the light of the above statements, choose the most appropriate answer from the options given below:

Given below are two statements:

Statement I:
The acidic strength of monosubstituted nitrophenol is higher than phenol because of electron withdrawing nitro group.

Statement II:
o-nitrophenol, m-nitrophenol and p-nitrophenol will have same acidic strength as they have one nitro group attached to the phenolic ring.

In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following p – V curve represents maximum work done?