With respect to the conformers of ethane, which of the following statements is true?
1. | Bond angle changes but bond length remains the same |
2. | Both bond angle and bond length change |
3. | Both bond angle and bond length remain the same |
4. | Bond angle remains the same but the bond length changes |
In which pair of ions both the species contain S-S bond?
1.
2.
3.
4.
The correct statement among the following is :
1. | Sn2+ is an oxidizing agent while Pb4+ is a reducing agent. |
2. | Sn2+ and Pb2+ both are oxidizing agents. |
3. | Sn4+ is a reducing agent while Pb4+ is an oxidizing agent. |
4. | Sn2+ is a reducing agent while Pb4+ is an oxidizing agent. |
The correct increasing order for the wavelengths of absorption in complexes of Co3+ is:
1. [Co(H2O)6]3+ < [Co(en)3]3+ < [Co(NH3)6]3 +
2. [Co(H2O)6]3+ < [Co(NH3)6]3+ < [Co(en)3]3+
3. [Co(NH3)6]3+ < [Co(en)3]3+ < [Co(H2O)6]3+
4. [Co(en)3]3+ < [Co(NH3)6]3+ < [Co(H2O)6]3+
A, X, Y, and Z in the above-mentioned reaction are:
A | X | Y | Z | |
1. | Methoxy- methane |
Ethanol | Ethanoic acid | Semicarbazone |
2. | Ethanal | Ethanol | But - 2 - enal | semicarbazone |
3. | Ethanol | Acetaldehyde | Butanone | Hydrazone |
4. | Methoxy- methane |
Ethanoic acid | Acetate | Hydrazine |
Which product is generated when cyclohexanone undergoes
aldol condensation and is subsequently heated?
1. | 2. | ||
3. | 4. |
Which of the following pairs of species have the same bond order?
1.
2.
3.
2. CO, NO
Extraction of gold and silver involves leaching with CN- ion. Silver is later recovered by:
1. Distillation
2. Zone refining
3. Displacement with Zn
4. Liquation
A 20-litre container at 400 K contains CO2 (g) at pressure 0.4 atm and an excess of SrO (neglecting the volume of solid SrO). The volume of the container is now decreased by moving the movable piston fitted in the container.
The maximum volume of the container, when the pressure of CO2 attains its maximum value will be:
(Given that: SrCO3(s) ⇋ SrO(s) + CO2(g) , Kp = 1.6 atm)
1. | 10 litre | 2. | 2 litre |
3. | 4 litre | 4. | 5 litre |
The correct statement among the following regarding [Mn(CN)6]3-is:
1. It is sp3d2 hybridized and tetrahedral.
2. It is d2sp3 hybridized and octahedral.
3. It is dsp2 hybridised and square planar.
4. It is sp3d2 hybridised and octahedral.