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ECAT Chemistry Online Test MCQs With Answers
Question # 1
Ethanol can be converted into ethanoic acid by
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Hydrogenation
Hydration
oxidation
Frmentation
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Question # 2
Compounds having same molecular formula but different structures are said to be
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Monomers
Isomers
Metamers
Tautomers
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Question # 3
Which of the following compounds on boiling with KMnO
4
(alk) and subsequent acidification will not give benzoic acid?
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Benzyl alcohol
Acetophenone
Anisole
Toluene
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Question # 4
Which of the following equations represents the action of heat on NaHCO
3
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Question # 5
In sp
2
type hybridization the three equivalent sp
2
orbitals lie in the same plane and at angle of
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0
°
60
°
120
°
180
°
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Question # 6
Solvay process is used in the manufacture of
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Na
2
CO
3
NaHCO
3
CaCl
2
All
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Question # 7
Elements combine together due to inherent tendency to stabilize themselves by:
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Losing electron.
Sharing electrons.
Gain in electrons.
All of above.
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Question # 8
Glycine at pH7 has the structure
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H
2
N -- CH
2
-- COOH
H
3
N
+
-- CH
2
-- COOH
H
2
N -- CH
2
COO
-
H
3
N
+
-- CH
2
-- COO
-
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Question # 9
To get DDT, chlorobenzene has to react with one of the following compound in the presence of conc.H
2
SO
4
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Trichloroethane
Dichloroacetone
Dichloroacetaldehyde
Trichloroacetealdehyde
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Question # 10
e/m of cathode rays is same but for positive rays e/m changes by changing gas in the discharge tube because
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Cathode rays are small sized particles
Cathode rays have same charge
Nature of cathode rays same for all gasses, but masses of nuclei are different for different gases
Temperature of cathode rays higher
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Question # 11
Which is the formula of tetra-ammine chloronitro platinum (VI) sulphate?
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[Pt(NH
3
)
4
(NO
2
)]SO
4
[PtNO
2
Cl(NH
3
)
4
]SO
4
[PtCl(NO
2
)(NH
3
)
4
]SO
4
[Pt(NH
3
)
4
(NO
2
)Cl]SO
4
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Question # 12
Carboxylic acids react with acids releasing gas from it:
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H2O as steam
CO
CO2
O2
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Question # 13
Enzymes are chemically
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Carbohydrates
Proteins
Fatty acids
Phospholipids
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Question # 14
Electronegativity order of alkyl halides is:
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Rl > RBr > RCl > RF
Rbr > RCl > RF >Rl
RCl > RF >Rl > RBr
RF >Ri > RBr >RII
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Question # 15
Which of the following chlorocompounds is heat easily hydrolysed by hydorxide ion to give the product indicated
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Question # 16
Choose an answer
Pent -1-ene-3-yne
2-pentyne-4-ene
1-pentene-3-yne
Pent-2-yen-4-ene
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Question # 17
Benzene is not prepared from
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Acetylene
Phenol
Benzoic acid
Bromo benzene
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Question # 18
In zero order reaction, the rate is independent of :
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Temperature of reaction
Concentration ofreactants
Concentration of products
None of these.
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Question # 19
Bohr model of atom is contradicted by:
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Planck's quantum theory
Pauli's exclusion theory
Heisenberg's uncertainty principle.
All of above.
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Question # 20
Alkyl halides on treatment with Zn and HCI gives
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Alkanes
Alkenes
Alkynes
Alcohols
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Question # 21
Which responds to +ve iodoform test?
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Butanol-1
Butan-1-al
Butanol-2
2-pentanone
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Question # 22
One calorie is equal
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4.132 J
760 J
4.184 J
1 J
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Question # 23
At certain temperature, 50% of HI is dissociated into H
2
and I
2
the equilibrium constant is
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1.0
3.0
0.5
0.25
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Question # 24
CH
3
CH
2
COOH is also named as:
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Propionic acid
Propanoic acid
Acetic Acid
Both (a) and (b)
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Question # 25
Sterols, vitamin D and terpenese belong to
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Simple lipids
Complex lipids
Derived lipids
None
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Question # 26
The general formula of alkane is
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C
n
H
2n+2
C
n
H
n
C
n
H
2n
C
2
H
2n-1
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Question # 27
From which of the following tertiary butyl alcohol is obtained by the action of methyl magnesium iodide?
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HCHO
CH
3
CHO
CH
3
COCH
3
CO
2
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Question # 28
Which of the following is obtained by condensation polymerization?
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Polyethene
Teflon
Phenol formaldehyde resin
Nitrile rubber
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Question # 29
How is the secondary structure of protein stabilized
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Through hydrogen bonding
Through ionic bonding
Through van der wall forces
Through covalent bonding
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Question # 30
The addition of unsymmetrical reagent to unsymmetrical alkene is in accordance with the rule:
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Hund's rule
Markownikov's rule
Pauli's Exclusion Principle
Auf bau Principle
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Question # 31
The boiling point of glycerol is more than propanal because of
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Hybridisation
H-bonding
Resonance
All these factors
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