R4RIN – MCQs, Mock Tests | Chemistry Chemistry MCQ Question

Bleaching powder is not used for bleaching

1. Cotton
2. Costly fabrics
3. Linen
4. Paper pulb

✅ Correct Answer: 2

Which of the following is the weakest reducing agent?

1. HF
2. HBr
3. HC?
4. HI

✅ Correct Answer: 1

Which of the following is not use of compounds of Fluorine

1. SbF3 is used for manufacture of pottery
2. Sodium fluoroacetate is a rat poison
3. Cu F2 is used in ceramic industry
4. None of the above

✅ Correct Answer: 4

In which compound of Xenon the oxidation state of Xenon is + 6.

1. XeF4
2. XeOF4
3. XeOF2
4. Na4XeO6

✅ Correct Answer: 2

Photographic plates are coated with a thin film of :

1. AgNO3
2. AgI
3. AgCl
4. AgBr

✅ Correct Answer: 4

The anhydride of HCIO4 is:

1. Cl2O
2. Cl2O6
3. ClO2
4. Cl2O7

✅ Correct Answer: 4

Indicate the correct statement:

1. Cl2 is the strongest oxidizing agent
2. I2 is a volatile solid
3. Br2 is more reactive than Cl2
4. Cl2 is insoluble in water

✅ Correct Answer: 2

Which one of the following halogens is present in Teflon:

1. I2
2. Br2
3. Cl2
4. F2

✅ Correct Answer: 4

Which is the paramagnetic oxide of chlorine:

1. Cl2O7
2. Cl2O6
3. ClO2
4. ClO2

✅ Correct Answer: 3

Alkanes containing a methyl group on main chain at 2nd carbon are called

1. iso-alkane
2. normal-alkane
3. neo-alkane
4. branched-alkane

✅ Correct Answer: 1

When one hydrogen atom of alkane is removed then it is called

1. alkene
2. alkyl
3. aldehyde
4. saturated hydrocarbon

✅ Correct Answer: 2

Alkanes are also known as

1. saturated hydrocarbon
2. unsaturated hydrocarbon
3. paraffins
4. both a & c

✅ Correct Answer: 3

Sabatier Senderns reaction involve _________ in presence of Ni

1. Aalkene & H2
2. alkene & O2
3. alkene & N2
4. alkyne & Cl2

✅ Correct Answer: 1

Hydrogenolysis results in the formation of

1. alkane
2. alkene
3. alkyne
4. aldehydes

✅ Correct Answer: 1

Clemmensens reduction infolves the reduction of

1. ketone
2. aldehyde
3. alkane
4. all of the above

✅ Correct Answer: 1

Removal of CO2 is called

1. carboxylation
2. decarboxylation
3. esterification
4. hydroxylation

✅ Correct Answer: 2

Soda lime is a mixture of

1. CaO and KOH
2. CaO and NaOH
3. NaOH and Na2O
4. Na2O and KOH

✅ Correct Answer: 2

Molozonide is unstable and changes into ozonide on

1. reduction
2. oxidation
3. hydrolysis
4. rearrangement

✅ Correct Answer: 4

Dehalogenation of ethyl tetrahalide will give

1. ethene
2. ethyne
3. ethyl halide
4. all of the above are possible

✅ Correct Answer: 2

R-Mg-Br is called

1. Grignard reagent
2. Metallic alkyl halide
3. Both a & b
4. Alkyl

✅ Correct Answer: 3

Upto ______ C atoms alkanes are gases

1. 2
2. 3
3. 4
4. 6

✅ Correct Answer: 3

Which of the following is the most reactive

1. ethane
2. ethyne
3. ethene
4. benzene

✅ Correct Answer: 3

Which of the following is the most reactiIncomplete oxidation of methane in the limited supply of air forms. ve

1. CO2 and H2O
2. CH3OH
3. CO + H2 + C
4. CO + H2O + C

✅ Correct Answer: 2

Introduction of nitro group in a molecule is called

1. nitration
2. halogenation
3. sulphonation
4. amination

✅ Correct Answer: 1

Order of ease of halogenation in alkane is

1. I2>Cl2>Br2>F2
2. F2>Cl2>I2>Br2
3. F2>Cl2>Br2>I2
4. Cl2>F2>Br2>I2

✅ Correct Answer: 3

The gas used in manufacturing of urea fertilizer

1. C2H6
2. C2H4
3. C2H2
4. CH4

✅ Correct Answer: 4

General formula of alkyne is

1. CnH2n + 2
2. CnH2n - 2
3. CnH2n
4. CnH2n + 2

✅ Correct Answer: 2

Which of the following will be acidic

1. propyne
2. 1-butyne
3. ethyne
4. all of the above

✅ Correct Answer: 4

Removal of halogen and hydrogen atom is

1. halogenation
2. dehalogenation
3. dehydrohalogenation
4. hydrohalogenation

✅ Correct Answer: 3

Alkenes are produced from dehalogenation of

1. dihalo alkane
2. trihalo alkane
3. vicinal dihalo alkane
4. vicinal trihalo alkane

✅ Correct Answer: 3

Reactivity due to pi-electrons is present in

1. alkane
2. alkene
3. alkyne
4. both b & c

✅ Correct Answer: 4

In unsaturated hydro carbons ?-electrons favour

1. less reactivity
2. addition reactions
3. substitution reactions
4. none

✅ Correct Answer: 2

Raney nickel is prepared from __________ by treating with caustic soda

1. Ni-Cu alloy
2. Ni-Fe alloy
3. Ni-Al alloy
4. Ni-Mg alloy

✅ Correct Answer: 3

Which one is Chloroform

1. CH2Cl2
2. CH3Cl
3. CHCl3
4. CCl4

✅ Correct Answer: 3

Vinylacetylene combines with HCI to form

1. polyacetylene
2. benzene
3. chloroprene
4. divinyl acetylene

✅ Correct Answer: 3

? ? -dichloroethyl sulphide is commonly known as

1. laughing gas
2. bio-gas
3. mustard gas
4. phosgene gas

✅ Correct Answer: 3

Which is used for artificial ripening of fruit?

1. ethane
2. ethene
3. ethyne
4. methane

✅ Correct Answer: 2

Preparation of vegetable ghee involves

1. halogenation
2. hydroxylation
3. hydrogenation
4. hydration

✅ Correct Answer: 3

Which is methyl cyanide

1. CH3NH2
2. CH3NO2
3. CH3CN
4. CH2 = CH - CN

✅ Correct Answer: 3

Which one of the following is termed as benzul alcohol?

1. C6H5OH
2. C6H5CH(OH)2
3. C6H5CH2OH
4. C6H5COOH

✅ Correct Answer: 3

Which one of the following is also known as lactic acid?

1. 3-Hydroxy propanoic acid
2. 2-Hydroxy propanoic acid
3. 2-hydroxy butanoic acid
4. 3-hydroxy butanoic acid

✅ Correct Answer: 2

Which one of the following is also known as tartaric acid?

1. 2 3-dihydroxy butance 1 4 -dioic acid
2. 2 3 -dihydroxy butanedioic acid
3. 2 3 -dihydroxy butanioc acid
4. 2 2 -dihydroxy butanoic acid

✅ Correct Answer: 1

Water gas heated at 450?C and 200 atm pressure in the presence of ZnO+Cr2O3 will produce

1. methanal
2. methanol
3. carbonic acid
4. methane

✅ Correct Answer: 2

The residue obtained after the crystallization of sugar from concentrated sugar cane juice is called

1. Mother liquor
2. Filterate
3. Extract
4. Molasses

✅ Correct Answer: 4

The formula of starch is

1. C12H22O11
2. C6H10O5
3. (C6H10O5)n
4. C6H12O6

✅ Correct Answer: 3

The process of fermentation of starch involve many enzymes the sequence of enzymes used are

1. Diastase-maltase-zymase
2. Zymase-maltase-diastase
3. Maltase-diastase-zymase
4. Diastase-zymase-maltase

✅ Correct Answer: 1

The rectified spirit contains

1. 12% alcohol
2. 90% alcohol
3. 95% alcohol
4. 100% alcohol

✅ Correct Answer: 3

K2Cr2O7/H2SO4 generate

1. Oxygen
2. Hydrogen
3. Nascent oxygen[O]
4. Nascent hydrogen[H]

✅ Correct Answer: 3

The oxidation of isopropyl alcohol will yield

1. propane
2. Propanol
3. Propanone
4. Propanoic acid

✅ Correct Answer: 3

Which alcohol will undergo elimination reaction to give alkene in the presence of acidic potassium dichromate?

1. Primary alcohol
2. Secondary alcohol
3. Tertiary alcohol
4. All of above

✅ Correct Answer: 3

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