HRCA Quiz Final round

Q. 

Any changes in the environment that can be detected is known as:

• receptor

• effector

• stimuli

• action

A reflex arc is:

• The pathway of blood circulation

• The pathway of nerve impulses with complete reflex action

• The pathway of enzyme action

• The pathway of hormone action

A _________ is made up of two or more atoms of the same kind or different kinds of chemically combined together.

• atom

• element

• molecule

• compound

The upper two chambers of the heart are called:

• arterioles

• atria

• ventricle

• venule

The temperature at which a solid changes its state to liquid upon heating is called the:

• heating point

• boiling point

• melting point

• condensation

A solution that contains a large amount of solute dissolved in a small amount of solvent is called __________.

• isotonic

• dilute

• concentrated

• solution

Reflection of light from a smooth surface is called _________ which forms sharp image.

• irregular reflection

• regular reflection

• smooth reflection

• none of these

The SI unit of voltage is_______.

• voltmeter

• volt

• ampere

• km

The pale yellow liquid present in the blood is called _______.

• platelets

• plasma

• white blood cells

• red blood cells

Digestive juice(gastric juice) in the stomach has a pH value of:

• 1

• 5

• 10

• 14