Science MCQs

Practice multiple choice questions with instant feedback. Select an option to see if you're correct.

Total Questions
2100
Page 4 of 210
Question 31 Easy

The primary colors of light are _____?

A
2
B
3
C
4
D
5
Question 32 Easy

ECG is used for the diagnosis of the ailment of the _____?

A
Brain
B
Heart
C
Liver
D
Kidneys
Question 33 Easy

In human and higher animals the exchange of gases is carried put by _____?

A
Circulatory processes
B
Respiratory processes
C
Digestive processes
D
Nervous processes
Question 34 Medium

Respiration involves _______?

A
Only Mechanical Process
B
Only Biochemical Process
C
Mechanical and Biochemical processes
D
Neither Mechanical nor Biochemical Process
Question 35 Medium

The movement of materials/sugar from the leaves to other tissues of the plant is called?

A
Translocation
B
Photosynthesis
C
Respiration
D
Transpiration
Question 36 Easy

A sphygmomanometer is used to check _____?

A
Blood pressure
B
White blood cells
C
Sugar level
D
None of these
Question 37 Easy

The food chain always starts from ____?

A
Producers
B
Consumers
C
Decomposers
D
Predators
Question 38 Easy

In periodic table elements are arranged according to ____?

A
Increasing atomic mass
B
Decreasing atomic number
C
Both A and B
D
Increasing in atomic number
Question 39 Easy

The maximum mass of an atom is concentrated in _____?

A
Electron
B
Proton
C
Neutron
D
Nucleus
Question 40 Easy

A voltmeter is always connected in a circuit in ____?

A
Series
B
Parallel
C
Both A and B
D
None of these
Showing 31-40 of 2100 questions

Quick Stats

Total Questions 10900
easy 5797
medium 2983
hard 2120

Practice Tips

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Did You Know?

Practice Makes Perfect

Regular practice with MCQs can improve your test-taking speed and accuracy by up to 40%.

Active Recall

MCQs engage active recall, which is 50% more effective for long-term memory than passive reading.