Molality is mass-to-mass ratio which is independent of

• A) Amount of Solvent
• B) Temperature of Solution
• C) Volume of Solution
• D) Amount of Solute

Why is blood that flows from the lungs to the heart bright red rather than dark red?

• A) Gastric juices produce the red colour of the blood
• B) Carbon dioxide makes it red
• C) Oxygen makes it red
• D) The lungs add a pigment (dye) to blood as it flows through them

What three things can light rays travel through?

• A) Liquid, Air, Plants
• B) Solids, liquids, gases
• C) Humans, plants, animals
• D) Air, water, outer space

Reflection happens when light strikes and then ----------------- a surface

• A) Refract
• B) Bounces off
• C) Reflect
• D) Break

The process of transforming vegetables oil to ghee is called __________.

• A) Galvanization
• B) Liquification
• C) Hydrogenation
• D) Sublimation

The term for a localized group of organisms belonging to the same species is known as _________

• A) Environment
• B) Biosphere
• C) Ecosystem
• D) Population

The elements of group 3 to 12 are called________

• A) transition elements
• B) noble elements
• C) typical elements
• D) normal elements

The refractive index of a denser medium with respect to a rarer medium is------:

• A) 1
• B) Smaller than 1
• C) Negative
• D) Greater than 1

If the temperature of a gas increased by keeping the volume constant, then:

• A) Its pressure rises
• B) Its pressure falls
• C) Its pressure is constant
• D) Suddenly increases and then decreases

The angle of reflection is 45° for a ray of light which is incident on a plane mirror. Calculate the angle between the reflected and the incident ray.

• A) 100°
• B) 25°
• C) 90°
• D) 50°

Which of the following halogens element has highest electron affinity?

• A) Iodine
• B) Chlorine
• C) Fluorine
• D) bromine

Animals such as foxes that consume other animals for their food and energy

• A) omnivores
• B) Herbivores
• C) Producers
• D) carnivores

The chromatin material is not visible during ________.

• A) Prophase
• B) Metaphase
• C) Anaphase
• D) Interphase

Which of the following two organisms are producers?

• A) consumers and phytoplankton
• B) zooplankton, consumers
• C) plants and phytoplankton
• D) plants and consumers

Fungi reproduce sexually with

• A) nonflagellate gametes
• B) nuclear exchange
• C) swimming gametes
• D) parthenogenesis

Which of the following illustrate the principle of conservation of momentum; (i) rocket motion, (ii) jet engine, (iii) a car stuck in sand (iv) recoil of a gun:

• A) (i) and (iii)
• B) (i) and (iv)
• C) (i), (ii) and (iv)
• D) (i) and (ii)

William crooked was the first scientists who gave the evidence of existence of _____.

• A) Atoms
• B) Electrons
• C) Neutrons
• D) Protons

When Ray of light enter from denser medium to rare medium it bends_____.

• A) Parallel to normal
• B) Perpendicular to normal
• C) Away from normal
• D) Towards normal

Which one is not physics property of Chlorine Gas:

• A) It is fairly soluble in water.
• B) It is a greenish yellow gas.
• C) It has pungent smell.
• D) It is a nontoxic gas.

Animals that consume autotrophs for their food and energy are

• A) Omnivores
• B) Carnivores
• C) Producers
• D) Herbivores