List of practice Questions

If the nuclear fission piece of uranium of mass 5.0 g is lost, the energy obtained in kWh is?
Current in the circuit will be?
An installation consisting of an electric motor driving a water pump lets 75 L of water per second to a height of 4.7 m. If the motor consumes a power of 5 kW, then the efficiency of the installation is?
A potential difference across the terminals of a battery is 50 V when 11 A current is drawn and 60 V, when 1 A current is drawn. The emf and the internal resistance of the battery are?
Beyond which frequency, the ionosphere bands any incident electromagnetic radiation but do not reflect it back towards the earth?
A metallic surface ejects electrons. When exposed to green light of intensity I but no photoelectrons are emitted, when exposed to yellow light of intensity 1 it is possible to eject electrons from the same surface by?
The amplification factor of a triode is 50. If the grid potential is decreased by 0.20 V, what increase in plate potential will keep the plate current unchanged?

Identify the musical instrument shown in this picture.

Identify the odd one out from the list: 

Maximum acceptable slope (a:b) for wheelchair ramp is in the ratio of: 

The symbol shown is associated with: 

Identify the organization which uses the symbol shown here: 

Identify the car manufacturer based on the visual shown here.

Identify the correct cut and fold drawing to create the shown image.

With a 50 mm lens when you change aperture from 2.8 to 8, the depth of field of the image will:
Which of the following animals is not depicted in Ashoka Pillar?
Boot space of a car refers to:
PostScript in digital printing was developed by:

Identify the ‘India Design Mark’ symbol.

1.0 g of magnesium is burnt with 0.56 g O2 in a closed vessel. Which reactant is left in excess and how much ?
(At. wt. Mg =24; O=16)
When 22.4 litres of H2(g) is mixed with 11.2 litres of Cl2 (g), each at S.T.P., the moles of HCl (g) formed is equal to :
Equal masses of H2, O2 and methane have been taken in a container of volume V at temperature 27°C in identical conditions. The ratio of the volumes of gases H2 : O2 : methane would be :
Acidity of diprotic acids in aqueous solutions increases in the order:
(a) \(H_2O_2 + O_3 → H_2O + 2O_2\)
(b) \(H_2O_2 + Ag_2O → 2Ag + H_2O + O_2\)
Role of hydrogen peroxide in the above reactions is respectively:
Which of the following molecules has the maximum dipole moment?