Science MCQs

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

Total Questions
2100
Page 122 of 210
Question 1211 Easy

Which ingredient is used in making hand sanitizer?

A
Isopropyl alcohol
B
Vinegar
C
Sugar
D
Salt
Question 1212 Easy

What is used to make the diaphragm of a homemade stethoscope?

A
Plastic bottle
B
Balloon
C
Cotton
D
Funnel
Question 1213 Easy

Which part of the plant is targeted in drip irrigation?

A
Leaves
B
Stem
C
Root zone
D
Flowers
Question 1214 Easy

How is water supplied in a drip irrigation system?

A
Through sprinklers
B
Through drip pipes
C
Through buckets
D
Through hoses
Question 1215 Easy

Which method is used to preserve orange juice?

A
Drying
B
Adding salt
C
Sealing tightly
D
Adding vinegar
Question 1216 Easy

What is the purpose of making holes in the plastic bottle in a sprinkler system?

A
To hang the bottle
B
To allow water to sprinkle
C
To attach the pipe
D
To fill water
Question 1217 Easy

Which preservative is used in lemon pickle?

A
Salt
B
Acetic acid
C
Vinegar
D
Sugar
Question 1218 Easy

What is used to fix the pipe in the hole of a water tank in sprinkler irrigation?

A
Thread
B
Glue gun
C
Tape
D
Stopper
Question 1219 Easy

Which tool is used to make holes in plastic bottles for irrigation systems?

A
Scissors
B
Hot screw driver
C
Knife
D
Needle
Question 1220 Easy

What is the ratio of alcohol to aloe vera in homemade sanitizer?

A
01:01
B
02:01
C
03:01
D
01:02
Showing 1211-1220 of 2100 questions

Quick Stats

Total Questions 11450
easy 5797
medium 3533
hard 2120

Practice Tips

Time Management

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Review Mistakes

Always check explanations for wrong answers

Track Progress

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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.