Nomenclature of Carbonyls

Q.

How many isomers are possible in ${\mathrm{C}}_4{\mathrm{H}}_8$

1. $5$

2. $4$

3. $3$

4. $2$

Q.

Calculate the mole fraction of ethanol and water in a sample of rectified spirit which contains 46% ethanol by mass

Q.

How can ethanol and ethanoic acid be differentiated on the basis of their physical and chemical properties?

Q.

IUPAC name of the compound ${\mathrm{CH}}_3-\mathrm{CH}=\mathrm{CH}-{\mathrm{CH}}_2\mathrm{OH}$ is _________

Q. The number of geometrical isomers of $C{H}_{3}CH=CH-CH=CH-CH=CH-Cl$ is :

1. 2
2. 3
3. 4
4. 8

Q. 112ml of a gas is produced at S.T.P by action of 412mg of alcohol ROH with CH3Mgl. The molecular mass of alcohol is?

Q. IUPAC name of $CC{l}_{3}CHO$ is

1. Chloral

2. Trichloro acetaldehyde

3. 2, 2, 2-trichloroethanal

4. 1, 1, 1-trichloroethanal

Q. Meso tartaric acid is optically inactive due to the presence of

1. Plane of symmetry
2. Molecular asymmetry
3. External compensation
4. Two asymmetric C-atoms

Q. IUPAC name for cinnamaldehyde is:

1. 2–Phenylprop–2-en–1–al
2. 1–Phenylprop–2–en–3–al
3. 3–Phenylprop–2-en–1–al
4. 1–Phenylprop-1-al

Q. How many structural isomers are possible for $C_7{H}_{16}$?

1. 6
2. 7
3. 8
4. 9

Q.

The IUPAC name of C₆H₅-CO-CH₂-CH₃

1. Propiophenone

2. Ethyl phenyl ketone

3. Acetophenone

4. 1-Phenylpropan-1-one

Q.

In CICH₂C=CCH₂Br, why is bromine given more priority than chlorine?

Q. The smell of bitter almond is given by the compound:

1. Benzoic acid
2. Benzaldehyde
3. Vanilin
4. Cinnamaldehyde

Q. Explain chloro-alkali process with diagram

Q.

The most unstable compounds of the following are:

1. hydrides of C

2. hydrides of Ge

3. hydrides of Sn

4. hydrides of Pb

Q. What mass of isobutylene is obtained from 37 g of tertiary butyl alcohol by heating with 20% H2SO4 at 363 K, if the yield is 65%?

Q.

What Is the formula of acrolein?

Q.

The optically active tartaric acid is named as D-(+)- tartaric acid because it has a positive

1. Optical rotation and is derived from D(+) glyceraldehyde

2. Optical rotation only when substituted by deuterium

3. pH in organic solvent

4. Optical rotation and is derived from D-glucose

Q. A salt producing hydrocarbon among these compounds is ____

1. Ethane
2. Methane
3. Ethene
4. Ethyne

Q. What is the IUPAC name for $C{H}_{3}CHO$?

1. Ethanal
2. Acetal
3. Methanal
4. Acetaldehyde

Q. 1)give IUPAC name of (CH3₃₎₂=C(Br)CH₂OH

Q. Formalin is the commercial name of:

1. Formic acid
2. Fluoroform
3. 40% aqeous solution of methanal
4. Paraformaldehyde

Q. Among the following which is most likely unhybridized molecule? (A) PCl3 (B) PCl5 (C) PH3 (D) NH3

Q. How many ketones are possible with molecular formula $C_6{H}_{12}O$?

1. $5$
2. $6$
3. $7$
4. $8$

Q.

Ethane, Ethene, Ethanoic acid, Ethyne, Ethanol

(i) The compound $\mathit{-}OH$ as the part of its structure

(ii) The compound with $\mathit{-}COOH$ as part of its structure.

(iii) Homologue of homologous series with the general formula $C_n{H}_{2n}$

Q. Which of the following on reaction with excess of $NaHS{O}_3$ in aqueous solution will give mixture of salts which can be separated in two fraction by fractional crystallization ?

1. 
2. 
3. 
4. 

Q. If from ZnS unit cell all the atoms are removed from any two body diagonals then what will be the formula?

Q.

The shape of trimethyl amine is:

1. Octahedral

2. Bent shape

3. Bent shape

4. Pyramidal

Q. Which of the following has a greater carbon-oxygen bond length? 1. Sodium formate 2. Calcium carbonate

Q.

What is the original Calgon made of?

1. Hydrated Sodium Aluminium Silicate

2. Sodium meta-aluminate

3. Sodium hydrogen phosphate

4. Sodium hexametaphosphate