Science MCQs

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

Total Questions
2100
Page 123 of 210
Question 1221 Easy

Which part of the stethoscope is placed on the chest?

A
Y-shaped tube
B
Funnel with balloon
C
Hollow tubes
D
Cotton swabs
Question 1222 Easy

What is added to water in sprinkler irrigation to provide nutrients?

A
Salt
B
Sugar
C
Chemical fertilizers
D
Vinegar
Question 1223 Easy

How long does it take for mango pickle to be ready?

A
1 day
B
7 days
C
15 days
D
30 days
Question 1224 Easy

What is the use of cotton swabs in a homemade stethoscope?

A
To hear sound
B
To block noise
C
To decorate
D
To hold tubes
Question 1225 Easy

Which substance is used as a preservative in apple jam?

A
Salt
B
Lemon juice
C
Vinegar
D
Acetic acid
Question 1226 Easy

Why is the jar air-tighted in pickle preparation?

A
To improve taste
B
To prevent microbial entry
C
To add pressure
D
To enhance color
Question 1227 Easy

What is the main advantage of drip irrigation?

A
It waters plants faster
B
It conserves water
C
It is cheaper
D
It is easier to install
Question 1228 Easy

Which ingredient is optional in homemade sanitizer?

A
Alcohol
B
Aloe vera
C
Essential oil
D
Distilled water
Question 1229 Easy

How is orange juice extracted after grinding?

A
By boiling
B
By sieving
C
By mixing
D
By freezing
Question 1230 Easy

Which irrigation system uses a network of pipes and valves?

A
Manual irrigation
B
Drip irrigation
C
Sprinkler irrigation
D
Both B and C
Showing 1221-1230 of 2100 questions

Quick Stats

Total Questions 11450
easy 5797
medium 3533
hard 2120

Practice Tips

Time Management

Practice with time limits for better preparation

Review Mistakes

Always check explanations for wrong answers

Track Progress

Monitor your improvement across subjects

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.