Board exam

In case of association, abnormal molar mass of solute will

1. Aincrease
2. Bdecrease
3. Cremain same
4. Dfirst increase and then decrease

Standard electrode potential for Sn⁴⁺/Sn²⁺ couple is +0.15 V and that for the Cr³⁺/Cr couple is −0.74 V. The two couples in their standard states are connected to make a cell. The cell potential will be

1. A+1.19 V
2. B+0.89 V
3. C+0.18 V
4. D+1.83 V

The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of Cr³⁺ ion (Atomic no. : Cr = 24) is ________.

1. A2.87 B.M.
2. B3.87 B.M.
3. C3.47 B.M.
4. D3.57 B.M.

Acidified KMnO₄ oxidises sulphite to

1. AS₂O₃²⁻
2. BS₂O₈²⁻
3. CSO₂(g)
4. DSO₄²⁻

The correct IUPAC name of [Pt(NH₃)₂Cl₂]²⁺ is

1. ADiamminedichloridoplatinum (II)
2. BDiamminedichloridoplatinum (IV)
3. CDiamminedichloridoplatinum (O)
4. DDiamminedichloridoplatinate (IV)

Alkyl halides undergoing nucleophilic bimolecular substitution reaction involve

1. Aretention of configuration
2. Bformation of racemic mixture
3. Cinversion of configuration
4. Dformation of carbocation

Which is the correct order of acid strength from the following ?

1. AC₆H₅OH > H₂O > ROH
2. BC₆H₅OH > ROH > H₂O
3. CROH > C₆H₅OH > H₂O
4. DH₂O > C₆H₅OH > ROH

The acid formed when propyl magnesium bromide is treated with CO₂ followed by acid hydrolysis is :

1. AC₃H₇COOH
2. BC₂H₅COOH
3. CCH₃COOH
4. DC₃H₇OH