Chemistry-
General
Easy
Question
Reaction of acetaldehyde with HCN followed by hydrolysis gives a compound which shows
- Optical isomerism
- Geometrical isomerism
- Metamerism
- Tautomerism
The correct answer is: Optical isomerism
Related Questions to study
physics-
As a body performs S.H.M., its potential energy
Varies with time as indicated in
As a body performs S.H.M., its potential energy
Varies with time as indicated in
physics-General
physics-
A small sphere carrying a charge
is hanging in between two parallel plates
by a string of length
. Time period of pendulum is
. When parallel plates are
charged, the time period changes to
The ratio
is equal to

A small sphere carrying a charge
is hanging in between two parallel plates
by a string of length
. Time period of pendulum is
. When parallel plates are
charged, the time period changes to
The ratio
is equal to

physics-General
physics-
The graph between wave number
and angular frequency
is
The graph between wave number
and angular frequency
is
physics-General
physics-
The de Broglie wave present in fifth Bohr orbit is
The de Broglie wave present in fifth Bohr orbit is
physics-General
physics-
The above is a plot of binding energy per nucleon
against the nuclear mass
correspond to different nuclei. Consider four reactions





where
is the energy released? In which reaction is
positive?
The above is a plot of binding energy per nucleon
against the nuclear mass
correspond to different nuclei. Consider four reactions





where
is the energy released? In which reaction is
positive?
physics-General
physics-
To determine the half- life of radioactive element, a student plots graph of ln
t. Here
is the rate of radioactive decay at time t. If the number of radioactive nuclei of this element decreases by a factor of
after 4.16 yr, the value of
is

To determine the half- life of radioactive element, a student plots graph of ln
t. Here
is the rate of radioactive decay at time t. If the number of radioactive nuclei of this element decreases by a factor of
after 4.16 yr, the value of
is

physics-General
physics-
Figure shows the energy levels
and
of an atom where
is the ground state.
red line in the emission spectrum of the atom can be obtained by an energy level change from
to
. A blue line can be obtained by following energy level change

Figure shows the energy levels
and
of an atom where
is the ground state.
red line in the emission spectrum of the atom can be obtained by an energy level change from
to
. A blue line can be obtained by following energy level change

physics-General
physics-
The energy level diagram for an hydrogen like atom is shown in the figure. The radius of its first Bohr orbit is

The energy level diagram for an hydrogen like atom is shown in the figure. The radius of its first Bohr orbit is

physics-General
physics-
The count rate of
of radioactive material was measured at different times and this has been shown in the figure. The half life of material and the total counts (approximately) in the first half life period, respectively are

The count rate of
of radioactive material was measured at different times and this has been shown in the figure. The half life of material and the total counts (approximately) in the first half life period, respectively are

physics-General
physics-
Drawings I and II show two samples of electric field lines

Drawings I and II show two samples of electric field lines

physics-General
physics-
Figure shows lines of force for a system of two point charges. The possible choice for the charges is

Figure shows lines of force for a system of two point charges. The possible choice for the charges is

physics-General
physics-
Figure shows the electric lines of force emerging from a charged body. If the electric field at ‘A’ and ‘B’ are EA and EB respectively and if the displacement between ‘A’ and ‘B’ is ‘r’ then

Figure shows the electric lines of force emerging from a charged body. If the electric field at ‘A’ and ‘B’ are EA and EB respectively and if the displacement between ‘A’ and ‘B’ is ‘r’ then

physics-General
biology
Given below is one of the types of ecological pyramids. This type represents –

Given below is one of the types of ecological pyramids. This type represents –

biologyGeneral
physics-
Four charges are arranged at the corners of a square ABCD as shown in the figure. The force on the positive charge kept at the centre ‘O’ is

Four charges are arranged at the corners of a square ABCD as shown in the figure. The force on the positive charge kept at the centre ‘O’ is

physics-General
physics-
A detector is moving in a circular path of radius r in anticlock wise direction with a constant angular velocity
as shown in the figure At time t=0, it starts from the location shown at A, assuming source at rest The time interval between minimum and maximum frequency as received by the detector

A detector is moving in a circular path of radius r in anticlock wise direction with a constant angular velocity
as shown in the figure At time t=0, it starts from the location shown at A, assuming source at rest The time interval between minimum and maximum frequency as received by the detector

physics-General