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1.

Which of the following is a 3 methyl butyl group.A. `CH_(3)CH_(2)CH_(2)CH_(2)CH_(2)`B. `(CH_(3)CH_(2))_(2)CH^(-)`C. `(CH_(3))_(2)CHCH_(2)CH_(2)^(-)`D. `(CH_(3)CH_(2))_(2)CH_(2)^(-)`

Answer» Correct Answer - D
Discussion
2.

The molecule which is free from angular strain isA. Cyclo propaneB. Cyclo butaneC. Cyclo pentaneD. Cyclo hexane

Answer» Correct Answer - D
Discussion
3.

The names of some compounds are given. Which one not in the `IUPAC` system?A. `underset("3-Methyl-4, ethyl heptane")underset()(CH_(3)CH_(2)-CH_(2)-underset(CH_(2)CH_(3))underset(|)(CH)-overset(CH_(3))overset(|)CHCH_(2)CH_(3))`B. `underset("3-Methyl-2 butanol")underset()(CH_(3)-underset(OH)underset(|)(CH)-underset(CH_(3))underset(|)(CH)-CH_(3))`C. `underset("2-Ethyl-3 methyl but-1-ene")underset()(CH_(3)-CH_(2)-underset(CH_(2))underset(||)C-underset(CH_(3))underset(|)C-CH_(3))`D. `underset("4-Methyl-2-pentyne.")underset()(CH_(3)-CequivC-CH(CH_(3))_(2))`

Answer» Correct Answer - A
Discussion
4.

IUPAC name of A. 2,3-dimethyl pentanoyl chlorideB. 3,4-di methyl pentanoyl chlorideC. 1-choro-1-1-oxo-2,3-dimethyl pentaneD. 2-ethyl-3-methylbutanoyl chloride.

Answer» Correct Answer - A
Discussion
5.

The IUPAC name of the compound shown below is A. 2-bromo-3-chloro cyclo-hexan-1-eneB. 6-bromo-2-chloro cyclohexeneC. 3-bromo-1-chloro cyclohexeneD. 1-bromo-3-chloro-cyclohexene.

Answer» Correct Answer - C
Discussion
6.

In which of the following species, all the three types of hybrid carbons are present ?A. `CH_(2)=C=CH_(2)`B. `CH_(3)CH=CHCH_(2)^(+)`C. `CH_(3)-CequivC-CH_(2)^(+)`D. `CH_(3)-CH=CH-Coverset(-)H_(2)`

Answer» Correct Answer - C
Discussion
7.

The reaction of an electrophile with a nucleophile is the same as the reaction of a Lewis acid with a Lewis base and is termed as Lewis acid-base combination reaction. Each atom in the product completes its octet ( except hydrogen which attains complete duplet) as a consequence of this combination. In which case additional reagent is needed to generate an electrophile ?A. B. C. D. In all cases.

Answer» Correct Answer - C
Discussion
8.

The `IUPAC` name of the compound having the formula `CH-=C-CH=CH_(2)` isA. 1-butene-3-yneB. 3-butene-1-yneC. 1-butyne-3-eneD. but-1-yne-3.

Answer» Correct Answer - A
Discussion
9.

Assertion : Butane and isopentane are homologues. Reason : Butane is a straight chain atkane while isopentane is a branched chain alkane.A. Both A and R are true and R is the correct explanation of AB. Both A and R are true but R is not a correct explanation of AC. A ts true but R is falseD. A is false but R is true

Answer» Correct Answer - B
Discussion
10.

The reaction of an electrophile with a nucleophile is the same as the reaction of a Lewis acid with a Lewis base and is termed as Lewis acid-base combination reaction. Each atom in the product completes its octet ( except hydrogen which attains complete duplet) as a consequence of this combination. Consider following reaction between an electrophile and a nucleophile Incorrect statement (s) is/are `H_(3)C-overset(CH_(3))overset(|)underset(CH_(3))underset(|)(C^(oplus))+H_(2)overset(cdotcdot)O:rarrH_(3)C-overset(CH_(3))overset(|)underset(CH_(3))underset(|)C-OH+H^(oplus)`A. It is a Lewis acid base combination reactionB. It is a Lowry-Bronsted acid base reactionC. Driving force that makes `DeltaG` negative is the completion of the octet of C and O atoms in the product.D. It is an clectrophile and B is a nucleophile.

Answer» Correct Answer - B
Discussion
11.

Assertion : `CH_(3)C equiv CH` is more polar than `CH_(3)CH = CH_(2)`. Reason : sp-carbon is more electronegative than `sp^(2)` carbon.A. Both A and R are true and R is the correct explanation of AB. Both A and R are true but R is not a correct explanation of AC. A ts true but R is falseD. A is false but R is true

Answer» Correct Answer - A
Discussion
12.

Which of the following does not exhibit tautomerism?A. B. C. D.

Answer» Correct Answer - A
Discussion