General Science MCQ – 116 (Chemistry)

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1. Find the correct order of increasing acidity?
(A) CH = CH > CH₂ = CH₂ > CH₃ – C = CH > CH₃ – CH₃
(B) CH₃ = CH₃ > CH₂ = CH₂ > CH₃ – C = CH > CH = CH
(C) CH₂ = CH₂ > CH₃ – CH = CH₂ > CH₃ – C = CH > CH = CH
(D) CH = CH > CH₃ – C = CH > CH₂ = CH₂ > CH₃ – CH₃

2. Identify Z in the given reaction:

(A) (CH₃)₂ –CH-O-CH₂CH₃
(B) CH₃-(CH₃)₂ –O-CH₃
(C) CH₃-CH(CH)₃-O-CH­₂CH₃
(D) CH₃-(CH₂)₃-O-CH₂CH₃

3. The product obtained on heating 2- Bromopentane with potassium ethoxide in ethanol is?
(A) 1-pentene
(B) 2-cis- pentene
(C) trans-2- pentene
(D) 2-ethoxy pentene

4. Choose the process by which liquid hydrocarbon can be converted to gaseous hydrocarbons?
(A) Hydrolysis
(B) Oxidation
(C) Cracking
(D) Distillation under reduced pressure

5. Which one of the following halides can be used in the Friedel-Crafts reaction?
(A) Isopropyl chloride
(B) Bromobrnzene
(C) Chlorobenzene
(D) Chloroethene

6. Which one of the following compounds forms salt in reaction with NaNH₂?
(A) C₂H₂
(B) C₂H₆
(C) C₆H₆
(D) C₂H₄

7. Which among the following reagent can be distinguished betweenCH₂BrCH=CH₂ from CH₂CH=CHBr?
(A) Br₂/CCl₄
(B) Cold KMnO₄
(C) AgNO/C₂H₅OH
(D) Ag(NH₃)₂OH

8. Isopropyl iodide is formed after reaction of propene with HI, this is due to?
(A) More stable free radical
(B) Homolysis
(C) More stable carbanion
(D) More stable carbocation

9. C₆H₅CHO is formed when C₆H₆ is treated with CO and HCl in the presence of anhydrous AlCl₃. Name of the reaction is?
(A) Friedel crafts reaction
(B) Gattermann reaction
(C) Rosenmund reaction
(D) Stephem reaction

10. A compound having a bond angle 180^o is?
(A) Alkyne
(B) Alkane
(C) Alkene
(D) Cycloalkane

General Science MCQ – 115 (Biology)