Given below are two statements : Statement I : The boiling points of aldehydes and ketones are higher than hydrocarbons of comparable molecular masses because of weak molecular association in aldehydes and ketones due to dipole-dipole interactions. Statement II : The boiling points of aldehydes and ketones are lower than the alcohols of similar molecular masses due to the absence of H-bonding. In the light of the above statements, choose the most appropriate answer from the given below

The pollution due to oxides of sulphur gets enhanced due to the presence of: (a) particulate matter (b) ozone (c) hydrocarbons (d) hydrogen peroxide. Choose the most appropriate answer from the options given below:

Compound X on reaction with $O_3$ followed by $Zn/H_2O$ gives formaldehyde and 2-methylpropanal as products. The compound X is

Given below are two statements: Statement I: In Lucas test, primary, secondary and tertiary alcohols are distinguished on the basis of their reactivity with conc. $HCl + ZnCl_2$, known as Lucas Reagent. Statement II: Primary alcohols are most reactive and immediately produce turbidity at room temperature on reaction with Lucas Reagent. In the light of the above statements, choose the most appropriate answer from the options given below:

A dehydration reaction links two glucose molecules to product maltose. If the formula for glucose is $C_6H_{12}O_6$ then what is the formula for maltose?

Which of the following $P-V$ curve represents maximum work done?

The correct sequence of bond enthalpy of 'C—X' bond is :

Match List -I with List -II. List -I (Drug class): (a) Antacids, (b) Antihistamines, (c) Analgesics, (d) Antimicrobials. List -II (Drug molecule): (i) Salvarsan, (ii) Morphine, (iii) Cimetidine, (iv) Seldane. Choose the correct answer from the options given below:

Identify the final product [D] obtained in the following sequence of reactions. $CH_3CHO \xrightarrow[ii) H_3O^+]{i) LiAlH_4} [A] \xrightarrow{H_2SO_4, \Delta} [B] \xrightarrow{HBr} [C] \xrightarrow{Na/dry ether} [D]$