Reduction of Carboxylic Acids

Q. 1.Which of the following is the most stable carbocation? (1)ch3-ch†extbullet-CN (2)ch3-ch†extbullet-och3 (3)ch3-ch†extbullet-NO2 (4)ch3-ch†extbullet-ch3 dot on ch represents carbocation

Q. 1. CH3-CHCl-CH2-CH3 has a chiral centre which one of the following represents its R configuration?

Q. 35 Which of the following is not planar in structure? 1) CH2 = CH -- CH = CH2 2) CH2 = CH -- CN 3) CH2 = C = CH2 4) CH2 = C = C = CH2 Also explain the reason clearly.

Q.

When CH₂ = CH - COOH is reduced with LiAlH₄ , the compound formed is

1. CH₃CH₂CH₂OH

2. CH₃CH₂CHO

3. CH₃CH₂COOH

4. CH₂ = CH - CH₂OH

Q. H-C≡ C-CH_3 \xrightarrow{HBr(excess)} A \xrightarrow[△]{H_2O}B Compound B is (1) A diol (2) An aldehyde (3) A ketone (4) An alkyl halide

Q.

The substance which cannot be used for preparing $H_2$$O_2$ solution is

1. Na2O2

2. BaO2

3. PbO2

4. 2-Ethyl anthraquinone

Q. 71 Which product is formed when But-2-yne is treated with NaNH2 & liqid NH3 ?

Q. 39. Acetylene on reaction with K2Cr2O7+H2SO4→ PRODUCT [O] 1)CH3CHO 2)CH3-CH2-CH3 3)CH3COOH 4)CH3OH

Q. NO2-CH2-CH=CH2 +HBr\overset{}{→ NO2-CH2-CHBr-CH3(Minor) +NO2-CH2-CH2-CH3Br (major)} why 2nd product is majo

Q. 14. which of the following alkyl halides will undergo SN1 reaction most readily? (1)(CH3)3------F (2)(CH3)3------Cl (3)(CH3)3------Br (4)(CH3)3------I

Q.

If $z={\sec }^{-1}\left(\frac{x^4+y^4-8x^2{y}^2}{x^2+y^2}\right)$, then $x\frac{\partial z}{\partial x}+y\frac{\partial z}{\partial y}$ is equal to

1. $\cot z$

2. $2\cot z$

3. $2\tan z$

4. $2\sec z$

Q. which of the following sequence Is wrong for dipole moment? (1) CH2Cl2>CHCl3 (2) chlorobenzene>fluorobenzene (3) H2O2>H2O>HF (4) N2O4>N2O5>N2

Q. Q) CH2 = CH - CH2 - Cl is treated with alc.KOH . We get A , B , C . Identify A , B , C?

Q. Which of the following will not show geometrical isomerism? (1) CH_3CH=CHCH_3 (2) CH_3CH_2CH=CH_3 (3) CH_3CH=N-OH (4) (CH_3)_2C=CHCH_3.

Q. 12. Arrange the following nucleophile in increasing rate towards reaction with the Methyl Bromide in EtOH 1)PhO- 2)PhS- 3)I- 4)Br-

Q. Functional groups present in the structure of HCQ

Q. If $y=y\left(x\right)$ satisfies the differential equation
$8\sqrt{x}(\sqrt{9+\sqrt{x}})dy={\left(\sqrt{4+\sqrt{9+\sqrt{x}}}\right)}^{-1}dx,x>0$
and $y\left(0\right)=\sqrt{7},$ then $y\left(256\right)=$

1. $3$
2. $9$
3. $16$
4. $80$

Q. 68 Which product is formed when But-2-yne is treated with Na & liquid NH3 ?

Q. how many structural isomers are possible for CH3-CH=C=CH-CH=CH-CH3

Q. If $\frac{dy}{dx}=\frac{xy}{x^2+y^2};y\left(1\right)=1;$ then a value of $x$ satisfying $y\left(x\right)=e$ is:

1. $\sqrt{3}e$
2. $\frac{1}{2}\sqrt{3}e$
3. $\sqrt{2}e$
4. $\frac{e}{\sqrt{2}}$

Q. Q85/180 Which of the following compounds willundergo racemisation when solution of KOHhydrolyses?CH, CI(i) CH3CH2CH2CICH3H, C-CH CH, C1CH3() HaC1CH

Q. name of this compound: ch tripplebond c-ch=ch-ch=ch-ch3

Q. Which among the following is a three dimensional molecule? (1) CH_2=CH-CH=CH_2 (2) CH_2=CH-CN (3) CH_2=C=CH_2 (4) CH_2=C=C=CH_2

Q. 17. Which of the following compounds is not planar with reason Ch2=c=ch2 Ch2=ch2 Ch2=ch-ch=ch2 Ch2=ch-c=_ch

Q. The equation of family of curves for which the length of the normal is equal to the radius vector is

1. $y^2\pm x^2=k$
   
2. $y\pm x=k$
   
3. $y^2=kx$
4. $Noneofthese$

Q. Ch3-ch=ch-ch2-ch3 + hbr gives in presence of h2o2 and why?

Q. Out of CHCl_3 , CH_4 and SF_{4 } the molecules having reggular geometry are a) CHCl_3 only b)CHCl_3 and SF_4 c) CH_4 only d) CH_4 and SF_4

Q. Which one of the following compounds is not planar? CH2 = C = CH2 CH2 = CH2 CH2 = CH – CH = CH2 CH2 = CH – C ≡ CH

Q. WHAT WILL BE THE NAME OF THE FOLLOWING COMPOUND: CH3 | CH-CH3 | CH3 CH2 CH CH2 CH CH2 CH3 | CH2 | CH3