41.

Which statement is not true for metals?

• They form bcc structure

• They form hcp structure

• They form ccp structure

• They have low enthalpy of sublimation

A  Glucose + fructose

B $\stackrel{\mathrm{HOH}/ {\mathrm{H}}^{+}}{\to }$ Glucose + glucose

C $\stackrel{\mathrm{HOH}/ {\mathrm{H}}^{+}}{\to }$ Glucose + Galactose

The disaacharides A, B and C respectively are

• lactose, sucrose and maltose

• sucrose, maltose and lactose

• sucrose, lactose and maltose

• maltose, sucrose and lactose

In the sequence of reaction,

Starting compound A is-

• RCN

• RNC

• RCHO

• R₂CO

Which of the following polymers can be used for lubrication and as an insulator?

• SBR

• PVC

• PTFE

• PAN

Among the following which one is condensation polymer?

• Orlon

• Melamine

• Teflon

• PMMA

In a reversible reaction a catalyst will affect the rate of

• forward reaction

• forward and reverse reaction

• reverse reaction

• Neither (a) nor (b)

The reagent which distinguishes formic acid and acetic acid is

• 2, 4-dinitrophenyl hydrazine

• HgCl₂

• C₂H₅ONa

• Hg₂Cl₂

Match List-I with List-II and select the correct answer from the given codes.

List - I (Reaction)	List - II (Reagent/ Catalyst)
A. Cannizaro reaction	1. SnCl2/ HCl
B. Stephen's reaction	2. NaOH
C. Clemmensen reduction	3. Zn/ Hg-conc. HCl
D. Rosenmund's reaction	4. $\frac{\mathrm{Pd}/ {\mathrm{BaSO}}_4}{\mathrm{Boiling} \mathrm{xylene}}$

• A - 1; B - 2; C - 3; D - 4

• A - 2; B - 1; C - 3; D - 4

• A - 4; B - 3; C - 2; D - 1

• A - 1; B - 4; C - 2; D - 3

Which of the following statement is false?

• Chlorophyll is responsible for the synthesis of carbohydrate in plants.

• In presence of oxygen, haemoglobin forms oxyhaemoglobin.

• Acetyl salicylic acid is known as aspirin.

• Vitamin B₁₂ contains Mg²⁺ ion.

Paracetamol is a following drug

• antipyretic

• antiseptic

• antibiotic

• anaesthetic