Till now, how many elements are known?

• A) 124
• B) 112
• C) 118
• D) 92

Efficiency is defined as:

• A) total output energy × input energy
• B) input energy ÷ total output energy
• C) input energy × useful output energy
• D) useful output energy ÷ input energy

The protection method used for ships and underground base of bridge from rusting is called ____________.

• A) Metallic Coating
• B) Cathode Protection
• C) Tin Platting
• D) Paint Coating

What is the organ that pumps blood all throughout the human body?

• A) The kidneys
• B) The lungs
• C) The heart
• D) The blood vessels and capillaries

When water is heated from 0º C to 20º C its volume:

• A) Remains constant up to 4º C and then increases
• B) Goes on decreasing
• C) First decreases and then increases
• D) Goes on increasing

During Anaphase of mitosis the chromosomes are ________.

• A) Reached at the poles
• B) Replicating themselves
• C) Moving towards the poles
• D) Arranging themselves at the equator

Distance covered in unit time is:

• A) velocity
• B) speed
• C) acceleration
• D) displacement

The branch of Physics which deals with the study of motion of bodies without the influence of force is known as________.

• A) Mechanics
• B) Modern Physics
• C) Kinematics
• D) Dynamics

Total internal reflection occurs when:

• A) The angle of incidence is less than the critical angle
• B) Light refracts as it exits glass into air.
• C) Light passing through glass is reflected inside the glass.
• D) Light passes from air into water.

In digestive system which is responsible for movement of food bolus to esophagus?

• A) Liver
• B) Tongue
• C) Pharynx
• D) Small intestine

The pair of homologous chromosomes is classified as ________.

• A) Bivalent
• B) Covalent
• C) Tetravalent
• D) Trivalent

Organizing similar species into larger groups is called___________

• A) Natural selection
• B) Classification
• C) Adaptation
• D) Homeostasis

Solar cell technology is an example of _______.

• A) Thermal energy
• B) Non-renewable energy
• C) Nuclear energy
• D) Renewable energy

A motion where a body has the exact same motion around a fixed point is an example of

• A) vibratory motion
• B) circular motion
• C) translatory motion
• D) random motion

The rate of change of velocity is known as

• A) acceleration
• B) uniform velocity
• C) variable velocity
• D) average velocity

_____________ gas is used as a bleaching agent

• A) Chlorine
• B) Oxygen
• C) Nitrogen
• D) Hydrogen

The energy of an atom in a compound ______.

• A) Can not find out
• B) Lesser than individual
• C) Remains same
• D) Higher than individual

A motion of a pendulum of a clock is an example of

• A) random motion
• B) vibratory motion
• C) translatory motion
• D) circular motion

If under the action of a force the work done is zero the direction of force and the displacement would be ………. to each other

• A) identical
• B) opposite
• C) insufficient information for an answer
• D) perpendicular

Brass (Zn + Cu) is an example of

• A) Zinc cupper
• B) Compound
• C) Mixture
• D) Element