A plane is inclined at an angle with respect to the horizontal. A particle is projected with a speed
from the base of the plane , making an angle
With respect to the plane as shown in the figure . The distance from the base ,at which the particle hits the plane is close to:
a) |
|
b) |
|
c) | d) |
Correct Option: a
Number of stereo centres present in the linear structure are X and cyclic structures of glucose are Y :
then write answer XY.
(if x=30, y= 10 then answer XY will be 3010).
a) |
54 |
b) |
44 |
c) | 55 |
d) | 45 |
Correct Option: d
View SolutionThe of a
solution will be
given
and
(Response should be upto only two decimal digit like 78.78 or 0.08).
a) |
2.65 |
b) |
4.35 |
c) | 4.65 |
d) | 5.35 |
Correct Option: d
View SolutionThe major product in the following reaction is :
a) |
|
b) |
|
c) | d) |
Correct Option: c
View SolutionWhich of the following is NOT a correct method of the preparation of benzylamine from cyanobenzene ?
a) |
|
b) |
|
c) | |
d) |
Correct Option: d
View SolutionThe highest possible oxidation states of uranium and plutonium, respectively, are :
a) |
|
b) |
|
c) | d) |
Correct Option: a
View SolutionA hydrated solid on heating initially gives a monohydrated compound
upon heating above
leads to an anhydrous white powder
and
respectively are :
a) |
Washing soda and soda ash. |
b) |
Baking soda and dead burnt plaster |
c) | Washing soda and dead burnt plaster. |
d) | Baking soda and soda ash. |
Correct Option: a
View SolutionThe correct order of the first ionization enthalpies is :
a) |
|
b) |
|
c) | d) |
Correct Option: b
View SolutionThe correct statements among (a) to (d) are :
(a) saline hydrides produce gas when reacted with
(b) reaction of with
leads to
(c) and
are electron-rich and electron precise respectively.
(d) and
are called molecular hydrides.
a) |
(a),(b),(c) and (d). |
b) |
(c) and (d) only. |
c) | (a),(c) and (d) only. |
d) | (a),(b) and (c) only. |
Correct Option: a
View SolutionThe ratio of the shortest wavelength of two spectral series of hydrogen spectrum is found to be about 9. The spectral series are :
a) |
Lymen and Paschen |
b) |
Balmer and Brackett |
c) | Brackett and Pfund |
d) | Paschen and Pfund |
Correct Option: a
View SolutionThe correct statement is :
a) |
aniline is a froth stabilizer. |
b) |
zincite is a carbonate ore. |
c) | sodium cyanide cannot be used in the metallurgy of silver. |
d) | zone refining process cannot be used for the refining of titanium. |
Correct Option: a
View SolutionThe increasing order of nucleophilicity of the following nucleophiles is :
a) |
|
b) |
|
c) | |
d) |
Correct Option: d
View SolutionThe correct option among the following is :
a) |
Colloidal medicines are more effective because they have small surface area. |
b) |
Addition of alum to water makes it unfit for drinking . |
c) | Colloidal particles in lyophobic sols can be precipitated by electrophoresis. |
d) | Brownian motion in colloidal solution is faster if the viscosity of the solution is very high. |
Correct Option: c
View SolutionWhich one of these factors does not effect the stability of conformation in acyclic compounds?
a) |
Steric interaction |
b) |
Torsional strain |
c) | Electrostatic forces of interaction |
d) | Angle strain |
Correct Option: d
View SolutionIn Chromatography, which of the following statements is INCORRECT for ?
a) |
|
b) |
The value of |
c) | Higher |
d) |
|
Correct Option: c
View SolutionThe crystal field stabilization energy (CFSE) of and
, respectively, are :
a) |
|
b) |
|
c) | d) | |
Correct Option: b
View SolutionThe difference between and
, when the combustion of one mole of heptane is carried out at a temperature T, (in terms of RT) is equal to:
(Response should be in integer with sign like -2 or +3).
a) | -4 | b) | -3 |
c) | 4 | d) | 3 |
Correct Option: a
View SolutionWhich one of the following graphs between molar conductivity versus
is correct?
a) |
|
b) |
|
c) | d) |
Correct Option: a
View SolutionThe correct match between Item - and Item -
is :
Item - I | Item-II | ||
(a) | Highest density polythene | (I) | Peroxide catalyst |
(b) | Polyacrylonitrile | (II) | Condensation at high temperature & pressure |
(c) | Novolac | (III) | Ziegler-Natta Catalyst |
(d) | Nylon 6 | (IV) | Acid or base catalyst |
a) |
|
b) |
|
c) | d) | |
Correct Option: d
View SolutionPoints and
in the following plot respectively correspond to
most probable velocity
a) |
|
b) |
|
c) | d) | |
Correct Option: a
View SolutionThe major product obtained in the given reaction is :
a) |
|
b) |
|
c) | d) |
Correct Option: c
View SolutionThe minimum amount of consumed per gram of reactant is for the reaction :
(Given atomic mass :
,
)
a) |
|
b) |
|
c) | |
d) |
Correct Option: a
View SolutionFor the reaction ,
Which of the following statement is INCORRECT ?
a) |
The equilibrium constant is large suggestive of reaction going to completion and so no catalyst is required . |
b) |
The equilibrium will shift in forward direction as the pressure increases. |
c) | The equilibrium constant decreases as the temperature increases. |
d) | The addition of inert gas at constant volume will not affect the equilibrium constant. |
Correct Option: a
View Solution of a non-volatile non-electrolyte solute is dissolved in
of two different solvents
and
whose ebulliscopic constants are in the ratio of
. The ratio of the elevation in their boiling points,
is:
a) |
|
b) |
|
c) | d) | |
Correct Option: c
View SolutionFor the reaction of with
, the rate constant is
at
and
at
The activation energy for the reaction, in
is :
(Response should be in integer only like 78 or 560).
a) |
168 |
b) |
150 |
c) | 72 |
d) | 59 |
Correct Option: a
View SolutionThe INCORRECT statement is :
a) |
the gemstone,ruby,has |
b) |
the spin-only magnetic moment of
|
c) | the color of |
d) | the spin-only magnetic moments of |
Correct Option: a
View SolutionCompound shows positive iodoform test. Oxidation of
with
gives acid
Anhydride of
is used for the preparation of phenolphthalein. Compound
is :
a) |
|
b) |
|
c) | |
d) | |
Correct Option: d
View SolutionThe number of pentagons in are x and trigons (triangles) in white phosphorus are y, then write answer xy.
(if x=30, y= 1 then answer xy will be 301).
a) |
203 |
b) |
124 |
c) | 123 |
d) | 204 |
Correct Option: b
View SolutionAir pollution that occurs in sunlight is:
a) |
reducing smog |
b) |
acid rain |
c) | oxidising smog |
d) | fog |
Correct Option: c
View Solution