Chemistry-
General
Easy
Question
Which of the following reagents cannot be used for converting 
?
- CH3COOH/H2SO4
- CH3COCH3
- (CH3CO)2O
- CH3COCl
The correct answer is: CH3COCH3
Acetone (CH3COCH3) cannot be used for acetylating an -OH group
Related Questions to study
physics-
In the figure shown a coil of single turn is wound on a sphere of radius R and mass m. The plane of the coil is parallel to the plane and lies in the equatorial plane of the sphere. Current in the coil is i. The value of B if the sphere is in equilibrium is
In the figure shown a coil of single turn is wound on a sphere of radius R and mass m. The plane of the coil is parallel to the plane and lies in the equatorial plane of the sphere. Current in the coil is i. The value of B if the sphere is in equilibrium is
physics-General
physics-
OABC is a current carrying square loop. An electron is projected from the centre of loop along its diagonal AC as shown. Unit vector in the direction of initial acceleration will be
OABC is a current carrying square loop. An electron is projected from the centre of loop along its diagonal AC as shown. Unit vector in the direction of initial acceleration will be
physics-General
physics-
Two long conductors are arranged as shown above to form overlapping cylinders, each of radius r, whose centers are separated by a distance d Current of density J flows into the plane of the page along the shaded part of one conductor and an equal current flow out of the plane of the page along the shaded portion of the other, as shown. What are the magnitude and direction of the magnetic field at point A?
Two long conductors are arranged as shown above to form overlapping cylinders, each of radius r, whose centers are separated by a distance d Current of density J flows into the plane of the page along the shaded part of one conductor and an equal current flow out of the plane of the page along the shaded portion of the other, as shown. What are the magnitude and direction of the magnetic field at point A?
physics-General
physics-
A charge particle of charge q, mass m is moving with initial velocity 'v' as shown in figure in a uniform magnetic field 
Select the correct alternative/alternatives
A charge particle of charge q, mass m is moving with initial velocity 'v' as shown in figure in a uniform magnetic field Select the correct alternative/alternatives
physics-General
physics-
A particle of charge 'q' and mass 'm' enters normally (at point P) in a region of magnetic field with speed v. It comes out normally from Q after time T as shown in figure. The magnetic field B is present only in the region of radius R and is uniform. Initial and final velocities are along radial direction and they are perpendicular to each other. For this to happen, which of the following expression(S) is are correct–
A particle of charge 'q' and mass 'm' enters normally (at point P) in a region of magnetic field with speed v. It comes out normally from Q after time T as shown in figure. The magnetic field B is present only in the region of radius R and is uniform. Initial and final velocities are along radial direction and they are perpendicular to each other. For this to happen, which of the following expression(S) is are correct–
physics-General
physics-
A uniform magnetic field of magnitude 1 T exists in region 
is along 
direction as shown. A particle of charge 1 C is projected from point 
) towards origin with speed 
. If mass of particle is 1 kg, then co–ordinates of centre of circle in which particle moves are
A uniform magnetic field of magnitude 1 T exists in region is along direction as shown. A particle of charge 1 C is projected from point ) towards origin with speed . If mass of particle is 1 kg, then co–ordinates of centre of circle in which particle moves are
physics-General
chemistry-
Which reducing agents of the following can be used for the following transformation?
a) CH3 - CH = CH.COOH → CH3CH = CH. CH2OH
Which reducing agents of the following can be used for the following transformation?
a) CH3 - CH = CH.COOH → CH3CH = CH. CH2OH
chemistry-General
chemistry-
chemistry-General
chemistry-
In the reaction, X is 
In the reaction, X is
chemistry-General
physics-
In a region magnetic field along x axis changes with time according to the given graph. If time period, pitch and radius of helix path are T0, P0 and R respectively then which of the following is incorrect if the particle is projected at an angle q0 with the positive x–axis in x–y plane ?
In a region magnetic field along x axis changes with time according to the given graph. If time period, pitch and radius of helix path are T0, P0 and R respectively then which of the following is incorrect if the particle is projected at an angle q0 with the positive x–axis in x–y plane ?
physics-General
physics-
In the loops shown, all curved sections are either semicircles or quarter circles. All the loops carry the same current. The magnetic fields at the centres have magnitudes B1 , B2 , B3 and B4
In the loops shown, all curved sections are either semicircles or quarter circles. All the loops carry the same current. The magnetic fields at the centres have magnitudes B1 , B2 , B3 and B4
physics-General
physics-
Two infinitely long linear conductors are arranged perpendicular to each other and are in mutually perpendicular planes as shown in figure. If 
A along the y–axis and 
. The value of magnetic field strength 
at P is
Two infinitely long linear conductors are arranged perpendicular to each other and are in mutually perpendicular planes as shown in figure. If A along the y–axis and . The value of magnetic field strength at P is
physics-General
physics-
If a charged particle of charge to mass ratio 
is entering in a magnetic field of strength B at a speed 
, then which of the following is correct?
If a charged particle of charge to mass ratio is entering in a magnetic field of strength B at a speed , then which of the following is correct?
physics-General
physics-
A and B are two concentric circular conductors of centre O and carrying current i1 and i2 as shown in the diagram. If ratio of their radii is 1:2 and ratio of the flux densities at O due to A and B is 1:3 then the value of 
will be :–
A and B are two concentric circular conductors of centre O and carrying current i1 and i2 as shown in the diagram. If ratio of their radii is 1:2 and ratio of the flux densities at O due to A and B is 1:3 then the value of will be :–
physics-General
physics-
Two thick wires and two thin wires, all of the same materials and same length form a square in the three different ways P, Q and R as shown in fig with current direction shown, the magnetic field at the centre of the square is zero in cases
Two thick wires and two thin wires, all of the same materials and same length form a square in the three different ways P, Q and R as shown in fig with current direction shown, the magnetic field at the centre of the square is zero in cases
physics-General
