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Science M.C.Q

carbon and its compounds · Gujarat Board (GSEB) STD 10 (GSEB - English Medium). 36 questions.

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36 questions · timed · auto-graded

MCQ 11 Mark
Which of the following is a saturated compound ?
  • ✓
    $C _3 H _8$
  • B
    $C _2 H _4$
  • C
    $C _2 H _2$
  • D
    $C _3 H _6$
Answer
Correct option: A.
$C _3 H _8$
$C _3 H _8$
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MCQ 21 Mark
Ethanol reacts with sodium and forms two products. These arc
  • A
    Sodium ethanoate and hydrogen
  • B
    Sodium ethanoate and oxygen
  • ✓
    Sodium ethoxide and hydrogen
  • D
    Sodium ethoxide and oxgen
Answer
Correct option: C.
Sodium ethoxide and hydrogen
Sodium ethoxide and hydrogen
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MCQ 31 Mark
What is the melting point of chloroform $\left( CHCl _3\right)$ ?
  • A
    $290 K$
  • ✓
    $209 K$
  • C
    $156 K$
  • D
    $90 K$
Answer
Correct option: B.
$209 K$
$209 K$
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MCQ 41 Mark
What is the melting point of chloroform $\left( CHCl _3\right)$ ?
  • A
    $290 K$
  • ✓
    $209 K$
  • C
    $156K$
  • D
    $90K$
Answer
Correct option: B.
$209 K$
$209 K$
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MCQ 51 Mark
Which of the following does not belong to the same homologous series?
  • A
    $CH _4$
  • B
    $C _2 H _6$
  • C
    $C _3 H _8$
  • ✓
    $C _4 H _8$
Answer
Correct option: D.
$C _4 H _8$
$C _4 H _8$
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MCQ 61 Mark
The name of the compound $CH _3- CH _2- CHO$ is _______.
  • ✓
    propanal
  • B
    propanone
  • C
    ethanol
  • D
    ethanal
Answer
Correct option: A.
propanal
propanal
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MCQ 71 Mark
Which of the following are unsaturated compounds?
  • A
    Ethene, ethyne, propene, propyne
  • B
    Ethyne, propyne, butyne, pentyne
  • C
    Ethene, propene, butene, pentene
  • ✓
    $A,B,C$
Answer
Correct option: D.
$A,B,C$
$ A,B,C$
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MCQ 81 Mark
Write the common name of ethanoic acid.
  • A
    Formic acid
  • ✓
    Acetic acid
  • C
    Propanoic acid
  • D
    Butanoic acid
Answer
Correct option: B.
Acetic acid
B. Acetic acid
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MCQ 91 Mark
Which of the following are not correct for carbon compounds?
  • A
    They are good conductors of electricity.
  • B
    They are non-conductors of electricity.
  • ✓
    They possess weak intermolecular attractive forces.
  • D
    $B$ and $C$
Answer
Correct option: C.
They possess weak intermolecular attractive forces.
C. They possess weak intermolecular attractive forces.
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MCQ 101 Mark
Ethane, with the molecular formula $C2H6$ has…….
  • A
    $6$ covalent bonds.
  • ✓
    $7$ covalent bonds.
  • C
    $8$ covalent bonds.
  • D
    $9$ covalent bonds.
Answer
Correct option: B.
$7$ covalent bonds.
$7$ covalent bonds.
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MCQ 121 Mark
Which of the following represents saponification reaction?
  • A
    $CH3COONa+ NaOH =CH4 + Na2CO3$
  • B
    $CH3COOH + C2H5OH  = CH3COOC2H5 + H2O$
  • C
    $2CH3COOH + 2Na → 2CH3COONa + H2$
  • ✓
    $CH3COOC2H5 + NaOH → CH3COONa + C2H5OH$
Answer
Correct option: D.
$CH3COOC2H5 + NaOH → CH3COONa + C2H5OH$
$CH3COOC2H5 + NaOH → CH3COONa + C2H5OH$
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MCQ 131 Mark
The first member of alkyne homologous series is....
  • ✓
    ethyne
  • B
    ethane
  • C
    propyne
  • D
    methane
Answer
Correct option: A.
ethyne
(A) ethyne
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MCQ 141 Mark
Which of the following compounds does not belong to the homologous series?
  • A
    $CH4$
  • B
    $C2H6$
  • C
    $C3H6$
  • ✓
    $C4H8$
Answer
Correct option: D.
$C4H8$
$C4H8$
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MCQ 151 Mark
Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, for example, hydrogen. After the formation of four bonds, carbon attains the electronic configuration of....
  • A
    helium
  • ✓
    neon
  • C
    argon
  • D
    krypton
Answer
Correct option: B.
neon
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MCQ 161 Mark
The correct structural formula of butanoic acid is...Vinegar is a solution of…
  • A
    50% -60% acetic acid in alcohol.
  • B
    5%-8% acetic acid in alcohol.
  • ✓
    5% -8% acetic acid in water.
  • D
    50% -60% acetic acid in water.
Answer
Correct option: C.
5% -8% acetic acid in water.
C. 5% -8% acetic acid in water.
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MCQ 171 Mark
Which products are formed by the reaction between ethanol and sodium?
  • A
    Sodium ethanoate and hydrogen
  • B
    Sodium ethanoate and oxygen
  • ✓
    Sodium ethoxide and hydrogen
  • D
    Sodium ethoxide and oxygen
Answer
Correct option: C.
Sodium ethoxide and hydrogen
(C) Sodium ethoxide and hydrogen
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MCQ 181 Mark
In which condition, chlorine reacts with saturated hydrocarbons at room temperature?
  • A
    In the absence of sunlight
  • ✓
    In the presence of sunlight
  • C
    In the presence of water
  • D
    In the presence of hydrochloric acid
Answer
Correct option: B.
In the presence of sunlight
(B) In the presence of sunlight
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MCQ 191 Mark
Which of the following are unsaturated compounds? $(i)$ Propane $(ii)$ Propene $(iii)$ Propyne $(iv)$ Chloropropane
  • A
    $(i)$ and $(ii)$
  • B
    $(ii)$ and $(iv)$
  • C
    $(iii)$ and $(iv)$
  • ✓
    $(ii)$ and $(iii)$
Answer
Correct option: D.
$(ii)$ and $(iii)$
$(ii)$ and $(iii)$
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MCQ 201 Mark
Oils on treating with hydrogen in the presence of palladium or nickel catalyst form fats. This is an example of...
  • ✓
    addition reaction.
  • B
    substitution reaction.
  • C
    rearrangement reaction.
  • D
    oxidation reaction.
Answer
Correct option: A.
addition reaction.
addition reaction.
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MCQ 211 Mark
Which of the following are correct structural isomers of butane? $CH3COOH$ In the above given reaction, alkaline $KMnO4$ acts as…
  • A
    reducing agent.
  • ✓
    oxidising agent.
  • C
    catalyst.
  • D
    dehydrating agent.
Answer
Correct option: B.
oxidising agent.
oxidising agent.
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MCQ 221 Mark
Fullerene is an allotropic form of.....
  • A
    phosphorus.
  • B
    sulphur.
  • ✓
    carbon.
  • D
    tin.
Answer
Correct option: C.
carbon.
C. carbon.
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MCQ 231 Mark
A molecule of $NH3$(ammonia) has....
  • ✓
    only single bonds.
  • B
    only double bonds.
  • C
    only triple bonds.
  • D
    two double bonds and one single bond.
Answer
Correct option: A.
only single bonds.
A. only single bonds.
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MCQ 241 Mark
In soap and detergent, non-polar tail is attracted towards......... and an anionic head is attracted towards.
  • A
    stain, glycerol
  • B
    water molecules, stain
  • ✓
    stain, water molecules
  • D
    water molecules, glycerol
Answer
Correct option: C.
stain, water molecules
C. stain, water molecules
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MCQ 251 Mark
Which of the following is used as food preservator?
  • A
    $CH3OH$
  • ✓
    $CH3COOH$
  • C
    $CH3CHO$
  • D
    $CH3COCH3$
Answer
Correct option: B.
$CH3COOH$
$CH_3COOH$
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MCQ 271 Mark
Name the substance having functional group $-OH.$
  • ✓
    Alcohol
  • B
    Ketone
  • C
    Ester
  • D
    Carboxylic acid
Answer
Correct option: A.
Alcohol
Alcohol
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MCQ 281 Mark
Which functional group is present in aldehyde?
  • A
    $A. $
  • B
    $–COOH$
  • ✓
    $-CHO$
  • D
    $-OH$
Answer
Correct option: C.
$-CHO$
$ -CHO$
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MCQ 291 Mark
Which functional group is present in ketone?
  • ✓
    $C=O$
  • B
    $-COOH$
  • C
    $-CHO$
  • D
    $-OH$
Answer
Correct option: A.
$C=O$
A. $C=O$
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MCQ 301 Mark
In order to form a compound, which of the following functional group possess minimum three carbon atoms?
  • ✓
    $–COOH$
  • B
    $-CHO$
  • C
     $C=O$
  • D
    $- C - O-$
Answer
Correct option: A.
$–COOH$
$–COOH$
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MCQ 311 Mark
Which of the following reaction takes place between the reaction of alcohol and carboxylic acid in the presence of concentrated H2SO4?
  • A
    Hydrolysis
  • B
    Beta elimination
  • C
    Saponification
  • ✓
    Esterification
Answer
Correct option: D.
Esterification
D. Esterification
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MCQ 321 Mark
Which of the following is obtained by the reduction of methanol?
  • A
    Ethanol
  • B
    $CO2$ and $O2$
  • ✓
    Methanol
  • D
    All of the given
Answer
Correct option: C.
Methanol
C. Methanol
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MCQ 331 Mark
Which functional group is present in meyhyl ethanoate?
  • A
    Alcohol
  • B
    Halide
  • C
    Ketone
  • ✓
    Ester
Answer
Correct option: D.
Ester
D. Ester
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MCQ 341 Mark
Which functional group is to be given suffix -ol in the nomenclature?
  • A
    $-CHO$
  • B
    $-COOH$
  • ✓
    $-OH$
  • D
    $-X$
Answer
Correct option: C.
$-OH$
$-OH$
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MCQ 351 Mark
Which functional group is present in carboxylic acid?
  • A
    $C=O$
  • ✓
    $–COOH$
  • C
    $–CHO$
  • D
    $-OH$
Answer
Correct option: B.
$–COOH$
$–COOH$
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MCQ 361 Mark
By which name the compounds containing functional group $-CHO$ are known?
  • A
    Amide
  • ✓
    Aldehyde
  • C
    Ketone
  • D
    Alcohol
Answer
Correct option: B.
Aldehyde
B. Aldehyde
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