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Bihar Combined Entrance Competitive Examination
List of top Questions asked in Bihar Combined Entrance Competitive Examination- 2017
Chloroethane reacts with X to give diethyl ether. The compound X is
BCECE - 2017
BCECE
Chemistry
Chemistry of organic compounds
Which of the following do not contain carbon-oxygen double bonds?
BCECE - 2017
BCECE
Chemistry
Carbon
How do you distinguish chlorobenzene A C from benzyl chloride ?
BCECE - 2017
BCECE
Chemistry
introduction to organic chemistry
Hydrolysis of cyanohydrin derivative produces
BCECE - 2017
BCECE
Chemistry
Carboxylic Acids
Identify the correct statement.
BCECE - 2017
BCECE
Chemistry
introduction to organic chemistry
Identify the monomers from the following.
BCECE - 2017
BCECE
Chemistry
Monomers, functionality, degree of polymerizations
58.5 gm of NaCl and 180 gm of glucose were separately dissolved in 1000 ml of water. Identify the correct statement regarding the elevation of boiling point (b.p.) of the resulting solutions.
BCECE - 2017
BCECE
Chemistry
Glucose
Dissolving 120 g of urea in 1000 g of water gave a solution of density 1.15g/mL. The molarity of the solution is
BCECE - 2017
BCECE
Chemistry
Solutions
The potential of a hydrogen electrode at pH=10 is
BCECE - 2017
BCECE
Chemistry
Hydrogen
Which of the following electrolytic solutions has the least specific conductance?
BCECE - 2017
BCECE
Chemistry
Conductance of Electrolytic Solutions
Reaction of acetone with HCN gives
BCECE - 2017
BCECE
Chemistry
Chemical Reaction
The standard emf of galvanic cell involving 3 moles of electrons in its redox reaction is 0.59 V. The equilibrium constant for the reaction of the cell is
BCECE - 2017
BCECE
Chemistry
EMF
A 5.2 molal aqueous solution of methyl alcohol, CH
3
OH is supplied. What is the mole fraction of methyl alcohol in the solution?
BCECE - 2017
BCECE
Chemistry
Solutions
When 2-butyne is treated with Pd BaSO
4
; the product formed will be
BCECE - 2017
BCECE
Chemistry
Liquid state
Which of the following has highest knocking effect in IC engine?
BCECE - 2017
BCECE
Chemistry
Alkanes
Which of the following acids does not exhibit optical isomerism ?
BCECE - 2017
BCECE
Chemistry
Isomerism
The compound formed as a result of oxidation of ethyl benzene by KMnO
4
is
BCECE - 2017
BCECE
Chemistry
Oxidation And Reduction Reactions
Which of the following reactions will not result in the formation of carbon-carbon bond?
BCECE - 2017
BCECE
Chemistry
Carbon-carbon bond formation through coupling reactions
Alkyl halides react with dialkyl copper reagents to give
BCECE - 2017
BCECE
Chemistry
Copper
Some meta-directing substituents in aromatic substitution are given. Which one is most deactivating?
BCECE - 2017
BCECE
Chemistry
Resonance
Which one of the following is an example for homogenous catalysis ?
BCECE - 2017
BCECE
Chemistry
Homogeneous catalysis
Which of the following statements is incorrect regarding physiosorption ?
BCECE - 2017
BCECE
Chemistry
Surface Chemistry
When a sulphur sol is evaporated, sulphur is obtained. On mixing with water, sulphur sol is not formed. The sol is
BCECE - 2017
BCECE
Chemistry
Chemical Reactions
Among the electrolytes Na
2
SO
4
. CaCl
2
, Al
2
(SO
4
)
3
and NH
4
Cl, the most effective coagulating agent for Sb
2
S
3
, sol is
BCECE - 2017
BCECE
Chemistry
Electrochemistry
The hydrocarbon which can react with sodium in liquid ammonia is
BCECE - 2017
BCECE
Chemistry
Hydrocarbons
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