Online CBSE NEET 2016 Solution of Chemistry = 4

These are Online CBSE NEET 2016 Solution of Chemistry = 3 for preparation.

1. The correct order of strengths of the carboxylic acids

• III > II > I
• II > I > III
• I > II > III
• II > III > I

2. The compound that will react most readily with gaseous bromine has the formula

• C₄H₁₀
• C₂H₄
• C₃H₆
• C₂H₂

3. Which one of the following compounds shows the presence of intramolecular hydrogen bond ?

• Cellulose
• Concentrated acetic acid
• H₂O₂
• HCN

4. The molar conductivity of a 0.5 mol/dm³ solution of AgNO₃ with electrolytic conductivity of 5.76 × 10^–3 S cm^–1 at 298 K is

• 0.086 S cm²/mol
• 28.8 S cm²/mol
• 2.88 S cm²/mol
• 11.52 S cm²/mol

5. The decomposition of phosphine (PH₃) on tungsten at low pressure is a first-order reaction. It is because the

• rate is independent of the surface coverage
• rate of decomposition is very slow
• rate is proportional to the surface coverage
• rate is inversely proportional to the surface coverage

6. The coagulation values in millimoles per litre of the electrolytes used for the coagulation of As2S3 are given below : I. (NaCl) = 52, II. (BaCl₂) = 0.69, III. (MgSO₄) = 0.22 The correct order of their coagulating power is

• III > II > I
• III > I > II
• I > II > III
• II > I > III

7. During the electrolysis of molten sodium chloride, the time required to produce 0.10 mol of chlorine gas using a current of 3 amperes is

• 220 minutes
• 330 minutes
• 55 minutes
• 110 minutes

8. How many electrons can fit in the orbital for which n = 3 and l = 1 ?

• 10
• 14
• 2
• 6

9. For a sample of perfect gas when its pressure is changed isothermally from p_i to p_f, the entropy change is given by

• ΔS = nRT In(p_f / p_i )
• ΔS = RT In(p_i / p_f )
• ΔS = nR In(p_f / p_i )
• ΔS = nR In(p_i / p_f )

10.The van't Hoff factor (i) for a dilute aqueous solution of the strong electrolyte barium hydroxide is

• 2
• 3
• 0
• 1