NDA Questions

Which is the number of water molecules that share

Which one of the following is the number of water molecules that share with two formula unit CaSO4 in Plaster of Paris?

  1. One
  2. Two
  3. Five
  4. Ten

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Which devices is sued to measure atmospheric pressure

Which one of the following devices is sued to measure atmospheric pressure?

  1. Ammeter
  2. Barometer
  3. Potentiometer
  4. Lactometer

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A ball balanced on a vertical rod is an example of

A ball balanced on a vertical rod is an example of

  1. stable equilibrium
  2. unstable equilibrium
  3. neutral equilibrium
  4. perfect equilibrium

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Which is the driest desert of the world

Which one of the following is the driest desert of the world?

  1. Atacama
  2. Gobi
  3. Sahara
  4. Kalahari

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Which Union Territories has the highest female literacy rate

Which one of the following Union Territories has the highest female literacy rate?

  1. Chandigarh
  2. Lakshadweep
  3. Andaman and Nicobar Islands
  4. Puducherry

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Which statements about meristematic tissues in plants is correct

Which one of the following statements about meristematic tissues in plants is correct?

  1. These are dead tissues and form wood
  2. They provide flexibility to plant due to their thickened walls
  3. These are present in the bark of a tree only
  4. Growth occurs in plants due to division of cells of these tissues

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Which is the correct sequence of levels of hierarchy of classification of organisms

Which one of the following is the correct sequence of levels of hierarchy of classification of organisms from higher to lower?

  1. Phylum – Class – Order – Family – Genus
  2. Phylum – Class – Family – Order – Genus
  3. Family – Order – Class – Species – Genus
  4. Class – Family – Order – Species – Genus

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Which statements about classification of plants is correct

Which one of the following statements about classification of plants is correct?

  1. Thallophytes have well differentiated body design
  2. Funaria is a fungus
  3. All Pteridophytes are Phanerogams
  4. Vascular system is not found among Bryophytes

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Which parts of body does not take part in the process of breathing

Which one of the following parts of body does not take part in the process of breathing?

  1. Bronchi
  2. Bowman’s capsule
  3. Diaphragm
  4. Trachea

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Which organelle is not found in prokaryotic cells

Which one of the following organelle is not found in prokaryotic cells?

  1. Cell wall
  2. Mitochondria
  3. Plasma membrane
  4. Ribosome

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AIDS is caused by a virus whose genetic material is

AIDS is caused by a virus whose genetic material is

  1. single stranded circular DNA
  2. double stranded DNA
  3. single stranded RNA
  4. double stranded RNA

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Which is the chemical formula of Washing Soda

Which one of the following is the chemical formula of Washing Soda?

  1. NaCO3
  2. Na2CO3.10H2O
  3. Na2CO3.5H2O
  4. NaOH

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Brine is an aqueous solution of

Brine is an aqueous solution of

  1. NaCl
  2. NaOH
  3. NaHCO3
  4. Na2CO3

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Which gives the highest amount of hydrogen ions

Which one of the following gives the highest amount of hydrogen ions (H+)?

  1. Sodium hydroxide solution
  2. Milk of magnesia
  3. Lemon juice
  4. Gastric juice

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Which of the following properties is true for a tooth paste

Which of the following properties is true for a tooth paste?

  1. It is acidic.
  2. It is neutral.
  3. It is basic.
  4. It is made up of calcium phosphate, the material of tooth enamel.

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The accidental touch of Nettle leaves creates a burning sensation

The accidental touch of Nettle leaves creates a burning sensation, which is due to inject of

  1. Hydrochloric acid
  2. Methanoic acid
  3. Citric acid
  4. Sulphuric acid

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Which is the natural phenomenon based on which a simple periscope works

Which one of the following is the natural phenomenon based on which a simple periscope works?

  1. Reflection of light
  2. Refraction of light
  3. Dispersion of light
  4. Total internal reflection of light

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Which one of the following devices is non-ohmic

Which one of the following devices is non-ohmic?

  1. Conducting copper coil
  2. Electric heating coil
  3. Semi conductor diode
  4. Rheostat

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Whether an object will float or sink in a liquid, depends on

Whether an object will float or sink in a liquid, depends on

  1. mass of the object only
  2. mass of the object and density of liquid only
  3. difference in the densities of the object and liquid
  4. mass and shape of the object only

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Which statements about gravitational force is not correct

Which one of the following statements about gravitational force is not correct?

  1. It is experienced by all bodies in the universe
  2. It is a dominant force between celestial bodies
  3. It is a negligible force for atoms
  4. It is same for all pairs of bodies in our universe

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Which is the value of 1 kWh of energy converted into joules

Which one of the following is the value of 1 kWh of energy converted into joules?

  1. 1.8 × 106 J
  2. 3.6 × 106 J
  3. 6.0 × 106 J
  4. 7.2 × 106 J

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Which one of the following has maximum inertia

Which one of the following has maximum inertia?

  1. An atom
  2. A molecule
  3. A one-rupee coin
  4. A cricket ball

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What is the net force experienced by a bar magnet

What is the net force experienced by a bar magnet placed in a uniform magnetic field?

  1. Zero
  2. Depends upon length of the magnet
  3. Never zero
  4. Depends upon temperature

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An object is moving, with uniform acceleration a

An object is moving, with uniform acceleration a. Its initial velocity is u and after time t its velocity is v. The equation of its motion is v = u + at. The velocity (along y-axis) time (along x-axis) graph shall be a straight line

  1. passing through origin
  2. with x-intercept u
  3. with y-intercept u
  4. with slope u

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If an object moves with constant velocity then

If an object moves with constant velocity then which one of the following statements is not correct?

  1. Its motion is along a straight line
  2. Its speed changes with time
  3. Its acceleration is zero
  4. Its displacement increases linearly with time

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If T is the time period of an oscillating pendulum

If T is the time period of an oscillating pendulum, which one the following statements is not correct?

  1. The motion repeats after time T only once
  2. T is the least time after which motion repeats itself
  3. The motion repeats itself after nT, where n is a positive integer
  4. T remains the same only for small angular displacements

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