A compound 'X' on treatment with Br2/NaOH, provided C3H9N, which gives positive carbylamine test. Compound 'X' is :
a) |
|
b) |
|
c) | d) |
Correct Option: b
View SolutionGiven the equilibrium constant :
of the reaction :
is 10 X1015, calculate the
of this reaction at 298 K
(Response should be upto only two decimal digit like 78.76 or 0.78 or 0.03).
a) |
|
b) |
|
c) | 0.47 |
d) |
Correct Option: c
View SolutionAmong the colloids cheese (C), milk (M) and smoke (S), the correct combination of the dispersed phase and dispersion medium, respectively is :
a) |
C: liquid in solid; M: liquid in solid; S: solid in gas |
b) |
C: liquid in solid; M: liquid in liquid; S: solid in gas |
c) | C: solid in liquid; M: Liquid in Liquid; S: gas in solid |
d) | C: solid in liquid; M: solid in liquid; S: solid in gas |
Correct Option: b
View SolutionWhich of the following compounds reacts with ethylmagnesium bromide and also decolourizes bromine water solution :
a) |
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b) |
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c) |
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d) |
|
Correct Option: a
View SolutionThe radius of the largest sphere which fits properly at the centre of the edge of a body centred cubic unit cell is : (Edge length is represented by 'a' )
a) |
0.134 a |
b) |
0.047 a |
c) | 0.027 a |
d) | 0.067 a |
Correct Option: d
View SolutionFor the equilibrium,
, the value of
(in kJ mol-1) at 298 K is approximately:
(Given: self ionisation constant of water = Kw = 10-14)
a) |
80 |
b) |
-100 |
c) | -80 |
d) | 100 |
Correct Option: a
View SolutionIn the above sequence of reactions, and
, respectively, are:
a) |
|
b) |
|
c) | d) |
Correct Option: b
View SolutionThe relative stability of +1 oxidation state of group 13 elements follows the order :
a) |
Ga < Al < In < TI |
b) |
Al < Ga < TI < In |
c) | Al < Ga < In < TI |
d) | TI < In < Ga < Al |
Correct Option: c
View SolutionThe number of bridging CO ligands(s) and Co-Co bond(s) in Co2(CO)8, respectively are:
a) |
2 and 1 |
b) |
4 and 0 |
c) | 0 and 2 |
d) | 2 and 0 |
Correct Option: a
View SolutionMatch the following items in column I with the corresponding items in column II
Column I Column II
(i) (A) Portland Cement ingredient
(B) Castner-Kellner Process
(C) Solvay process
(D) Temporary hardness
a) |
(i) |
b) |
(i) |
c) | (i) |
d) | (i) |
Correct Option: c
View SolutionThe reaction that does NOT define calcination is :
a) |
|
b) |
|
c) | d) |
Correct Option: b
View SolutionThe hydride that is NOT electron deficient is :
a) |
|
b) |
|
c) | d) |
|
Correct Option: d
View SolutionWhich of the following compounds will produce a precipitate with ?
a) |
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b) |
|
c) | d) |
Correct Option: c
View SolutionIn the following compound,
the favourable site/s for protonation is/are :
a) |
(b), (c) and (d) |
b) |
(a) and (e) |
c) | (a) |
d) | (a) and (d) |
Correct Option: a
View SolutionThe correct option with respect to the Pauling electronegativity values of the elements is :
a) |
Ga < Ge |
b) |
P > S |
c) | Si < Al |
d) | Te > Se |
Correct Option: a
View SolutionThe higher concentration of which gas in air can cause stiffness of flower buds?
a) |
|
b) |
|
c) | d) |
Correct Option: b
View SolutionThe major product obtained in the following conversion is :
a) |
|
b) |
|
c) |
|
d) |
|
Correct Option: d
View SolutionThe coordination number of Th in is :
(Response should be in integer only like 10 or 5).
a) | 14 | b) | 8 |
c) | 10 | d) | 6 |
Correct Option: c
View Solution25 ml of the given HCl solution requires 30 mL of 0.1 M sodium carbonate solution. What is the volume (in ml) of this HCl solution required to titrate 30 mL of 0.2 M aqueous NaOH solution?
(Response should be in integer only like 78 or 6).
a) |
25 |
b) |
75 |
c) | 12.5 |
d) | 50 |
Correct Option: a
View SolutionThe reaction,
, for which
and
, is not feasible at 298 K. Temperature (in K) above which reaction will be feasible is :
a) |
2380.5 |
b) |
2480.3 |
c) | 2040.5 |
d) | 1890 |
Correct Option: b
View SolutionThe correct match between Item I and Item II is :
Item I Item II
(A) Allosteric effect (P) Molecule binding to the active site of enzyme
(B) Competitive inhibitor (Q) Molecule crucial for communication in the body
(c) Receptor (R) Molecule binding to a site other than the active site of enzyme
(D) Poison (S) Molecule binding to the enzyme covalently
a) |
(A) |
b) |
(A) |
c) | (A) |
d) | (A) |
Correct Option: c
View SolutionThe reaction 2X B is a zeroth order reaction. If the initial concentration of X is 0.2 M, the half- life is 6 h. When the initial concentration of X is 0.5 M, the time required (in hours) to reach its final concentration of 0.2 M will be :
a) |
18 |
b) |
9 |
c) | 12 |
d) | 6 |
Correct Option: a
View SolutionThe major product obtained in the following reaction is :
a) |
|
b) |
|
c) |
|
d) |
|
Correct Option: c
View SolutionThe major product of the following reaction is :
a) |
|
b) |
|
c) |
|
d) |
|
Correct Option: c
View SolutionThe homopolymer formed from 4-hydroxy-butanoic acid is :
a) |
|
b) |
|
c) |
|
d) |
|
Correct Option: b
View Solution is 40% ionised in aqueous solution.
The value of its van't Hoff factor (i) is :
(Response should be upto only one decimal digit like 78.7 or 3.5).
a) |
1.8 |
b) |
2.2 |
c) | 2 |
d) | 1.6 |
Correct Option: a
View SolutionThe correct match between Item I and Item II is :
Item I Item II
(A) Ester test (P) Tyr
(B) Carbylamine test (Q) Asp
(C) Phthalein dye test (R) Ser
(S) Lys
a) |
(A) |
b) |
(A) |
c) | (A) |
d) | (A) |
Correct Option: c
View SolutionThe de Broglie wavelength () associated with a photoelectron varies with the frequency (
) of the incident radiation as, [
is threshold frequency] :
a) |
|
b) |
|
c) | d) |
Correct Option: d
View SolutionTaj Mahal is being slowly disfigured and discoloured. This is primarily due to :
a) |
Soil pollution |
b) |
global warming |
c) | water pollution |
d) | acid rain |
Correct Option: d
View SolutionThe standard reaction Gibbs energy for a chemical reaction at an absolute temperature T is given by
Where A and B are non-zero constants. Which of the following is TRUE about this reaction?
a) |
Endothermic if A < 0 and B > 0 |
b) |
Exothermic if B < 0 |
c) | Exothermic if A > 0 and B < 0 |
d) | Endothermic if A > 0 |
Correct Option: d
View SolutionThe solution of the differential equation,
a) |
|
b) |
|
c) | d) |