Science MCQs for PST, JEST and other posts

which of these plants open its mouth when insect sit on its lid?

 

A. Sunflower
B. Pitcher plant
C. Brassica Plant
D. None of these

The speed of sound in air at sea level is approximately____________?

 

A. 300 meter per second
B. 320 meter per second
C. 340 meters per second
D. 370 meter per second

Who invented the safety pin?

A. Charles Goodbye
B. steward Harshone
C. Walter Hunt
D. A.Rose

Entomology Is the Study of___________?

 

A. worms
B. insects
C. Animals
D. All of these

How many bones in our body?

 

A. 102
B. 306
C. 206
D. 204

Sound cannot travel through __________

 

A. Solid
B. Liquid
C. Gases
D. Vaccum

The distance of mercury from sun is__________?

 

A. 56 million km
B. 57.9 million km
C. 58.9 million km
D. 59.1 million

The study Of GLANDS is called?

 

A. cardiology
B. None of these
C. Endocrinology
D. Entomology

The repetition of property after a certain interval called ___________?

A. Electron efinity
B. Atomic radius
C. periodicity of property
D. none of these

Reflex actions in head region are under the control of___________?

 

A. Brain
B. Spinal cord
C. both a & b
D. non of the above

 The protons and neutrons are found in the center of the atom, which is called the _________of the atom?

A. Nucleus
B. Headquarters
C. Hub
D. None of These

_____________ are positively (+) charged particles?

4 

A. Neutrons
B. Electrons
C. Protons
D. None of These

___________are negatively (-) charged particles of an atom?

 

A. Protons
B. Neutrons
C. Electrons
D. None of These

____________ have no charge?

A. Neutrons
B. Protons
C. Electrons
D. None of These

Elements are made of _________?

 

A. Atoms
B. Molecules
C. H2O
D. Compounds

SI unit of time is_________?

 

A. second
B. kilo gram
C. meter
D. volt

The speed of light is __________?

A. 280,000 km/s
B. 300,000 km/s
C. 320,000 km/s
D. none of these

The soul of chemistry is dealing with___________?

 

A. Internal structural changes in matter
B. Composition of matter
C. Properties of matter
D. Composition and properties of matter

which one is the most common disease?

A. Dental
B. Leprosy
C. Headache
D. Migraine

Orange belongs to the family

 

a. Malvaceae
b. Rotaceae
c. Rutaceae
d. Composite

               Good luck