List of practice Questions

Compound P is neutral. Q gives effervescence with NaHCO3
Compound P is neutral. Q gives effervescence with NaHCO3 while R reacts with Hinsbergs reagent to give solid soluble in NaOH. Compound P is

Chiral complex from the following is 

 

What is the purpose of adding gypsum to cement? 
A square loop of area \(25\ cm^2\) has a resistance of \(10\ Ω\). The loop is placed in uniform magnetic field of magnitude \(40.0 \ T\). The plane of loop is perpendicular to the magnetic field. The work done in pulling the loop out of the magnetic field slowly and uniformly in \(1.0\) sec, will be

Assertion A: If \( dQ \) and \( dW \) represent the heat supplied to the system and the work done on the system respectively, then according to the first law of thermodynamics: \[ dQ = dU - dW. \]
Reason R: First law of thermodynamics is based on the law of conservation of energy.
In the light of the above statements, choose the correct answer from the options given below:

A bullet of mass 0.1 kg moving horizontally with speed 400 ms-1 hits a wooden block of mass 3.9 kg kept on a horizontal rough surface. The bullet gets embedded into the block and moves 20m before coming to rest. The coefficient of friction between the block and the surface is ______.
(Given g = 10 m/s²)
Given below are two statement: one is labelled as Assertion A and the other is labelled as Reason R.  
Assertion A : If an electric dipole of dipole moment 30 x 10-5 Cm is enclosed by a closed surface, the net flux coming out of the surface will by zero.
Reason R : Electric dipole consists of two equal and opposite charges. 
In the light of above, statements, choose the correct answer from the options given below:

A single current-carrying loop of wire carrying current I flows in the anticlockwise direction (seen from the +z direction) and lies in the xy plane. The plot of \(\hat{j}\) component of magnetic field (\(B_y\)) at a distance a (less than radius of the coil) and on the yz plane vs z coordinate looks like:
Ques Fig

Given below are two statements:
Statement I: If heat is added to a system, its temperature must increase.
Statement II: If positive work is done by a system in a thermodynamic process, its volume must increase.
In the light of the above statements, choose the correct answer from the options given below
For the following circuit and given inputs A and B, choose the correct option for output 'Y'
Logic Gate
A bar magnet is released from rest along the axis of a very long, vertical aluminum tube. After sometime the magnet will :
The temperature of an ideal gas is increased from 200 K to 800 K. If r.m.s. speed of gas at 200K is v0. Then, r.m.s. speed of the gas at 800 K will be
an body cools down from 80°C to 60°C in 5 minutes The temperature pf the surrounding is 20°C. The time taken to cool from 60°C to 40°C is
A point charge \(2×10^{−2}C\) is moved from P to S in a uniform electric field of \(30NC^{−1}\) directed along positive x-axis. If coordinates of P and S are \((1,2,0) m \) and \((0,0,0) m\) respectively, the work done by electric field will be
A gas mixture consists of 2 moles of oxygen and 4 moles of neon at temperature T. Neglecting all vibrational modes, the total internal energy of the system will be,
The amplitude of 15sin(1000πt) is modulated by 10sin(4πt) signal. The amplitude modulated signal contains frequency(ies) of
(A) 500 Hz 
(B) 2 Hz  
(C) 250 Hz  
(D) 498 Hz  
(E) 502 Hz 
Choose the correct answer from the options given below: 
Given below are two statement : one is labelled as Assertion A and the other is labelled as Reason R.  
Assertion A : EM waves used for optical communication have longer wavelengths than that of microwave, employed in Radar technology.  
Reason R : Infrared EM waves are more energetic than microwaves, (used in Radar)  
In the light of given statements, choose the correct answer from the options given below:  
Heat energy of 184 kJ is given to ice of mass $600 g$ at −12°C. Specific heat of ice is $ 2222.3 J kg^{−1}C^{−1}$ and latent heat of ice in $ 336 kJkg^{−1} $
A. Final temperature of system will be 0°C.
B. Final temperature of the system will be greater than 0°C.  
C. The final system will have a mixture of ice and water in the ratio of 5:1.  
D. The final system will have a mixture of ice and water in the ratio of 1:5. 
E. The final system will have water only.
Choose the correct answer from the options given below:
Which of the following are true?
A. Speed of light in vacuum is dependent on the direction of propagation. 
B. Speed of light in a medium is independent of the wavelength of light. 
C. The speed of light is independent of the motion of the source. 
D. The speed of light in a medium is independent of intensity.
Choose the correct answer from the options given below:
For a particle performing linear SHM, its position (x) as a function of time (t) is given by x = Asin(ωt + δ). Given that, at t = 0, particle is at +A/2 and is moving towards x = +A. Find δ
Given below are two statements:  
Statement I : The diamagnetic property depends on temperature.  
Statement II : The included magnetic dipole moment in a diamagnetic sample is always opposite to the magnetizing field.  
In the light of given statement, choose the correct answer from the options given below:  
The cavities in the vascular bundles of monocot stem
The following plant is submerged and suspended in water
Composition of biogas produced during sewage treatment is
The structure formed as a result of amphimixis is