Online CBSE NEET 2017 Online Solution of Chemistry-2

These are MCQs of CBSE NEET 2017 with Solutions of chemistry.

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1. The most suitable method of separation of 1 : 1 mixture of ortho and para-nitrophenols is :

• Chromatography
• Crystallisation
• Steam distillation
• Sublimation

2. HgCl₂ and I₂ both when dissolved in water containing I– ions the pair of species formed is

• (1) HgI₂, I^-
• (HgI₄)^2- , (I₂)^-
• Hg₂I₂, I^-
• HgI₂, (I₃)^-

3. Mixture of chloroxylenol and terpineol acts as :

• antiseptic
• antipyretic
• antibiotic
• analgesic

4. An example of a sigma bonded organometallic compound is :

• Grignard's reagent
• Ferrocene
• Cobaltocene
• Ruthenocene

5. A first order reaction has a specific reaction rate of 10^2- sec^-1. How much time will it take for 20g of the reactant to reduce to 5 g ?

• 138.6 sec
• 346.5 sec
• 693.0 sec
• 238.6 sec

6. Match the interhalogen compounds of column-I with the geometry in column II and assign the correct. code.

7. Concentration of the Ag+ ions in a saturated solution of Ag₂C₂O₄ is 2.2 × 10^-4 mol L–1 Solubility product of Ag2C2O4 is :-

• 2.66 × 10^-12
• 4.5 × 10^-11
• 5.3 × 10^-12
• 2.42 × 10^-8

8. In the electrochemical cell :- Zn|ZnSO4(0.01M)||CuSO4(1.0 M)|Cu, the emf of this Daniel cell is E1. When the concentration of ZnSO4 is changed to 1.0M and that of CuSO₄ changed to 0.01M, the emf changes to E₂. From the followings, which one is the relationship between E1 and E2? [Given, (RT/F ) = 0.059 ]

• E1 < E₂
• E1 > E₂
• E2 = 0 not equal to E₁
• E₁ = E₂

9. Which of the following pairs of compounds is isoelectronic and isostructural ?

• TeI₂,XeF₂
• (IBr₂ )^-,XeF₂
• IF₃, XeF₂
• BeCl₂,XeF₂

10. The IUPAC name of the compound

• 5-formylhex-2-en-3-one
• 5-methyl-4-oxohex-2-en-5-al
• 3-keto-2-methylhex-5-enal
• 3-keto-2-methylhex-4-enal