Science Basics MCQ & Objective Questions
Understanding the fundamentals of Science is crucial for students preparing for school and competitive exams. Mastering Science Basics not only enhances your conceptual clarity but also boosts your confidence in tackling various exam formats. Practicing MCQs and objective questions helps you identify important questions and strengthens your exam preparation strategy.
What You Will Practise Here
Basic concepts of Physics, Chemistry, and Biology
Key formulas and their applications
Important definitions and terminologies
Diagrams and their significance in scientific understanding
Fundamental theories and laws in Science
Problem-solving techniques for objective questions
Common experiments and their outcomes
Exam Relevance
Science Basics is a vital topic in various examinations, including CBSE, State Boards, NEET, and JEE. Questions often focus on conceptual understanding and application of theories. Common patterns include multiple-choice questions that test your ability to apply knowledge in practical scenarios, making it essential to be well-versed with important Science Basics questions for exams.
Common Mistakes Students Make
Misinterpreting scientific terms and definitions
Overlooking the importance of units in calculations
Confusing similar concepts, such as energy types or chemical reactions
Neglecting to practice diagram-based questions
FAQs
Question: What are some effective ways to prepare for Science Basics MCQs?Answer: Regular practice of objective questions, reviewing key concepts, and understanding the application of theories are effective strategies.
Question: How can I improve my accuracy in answering Science Basics questions?Answer: Focus on understanding concepts rather than rote memorization, and practice with timed quizzes to enhance your speed and accuracy.
Start solving practice MCQs today to test your understanding and solidify your knowledge in Science Basics. Remember, consistent practice is the key to success in your exams!
Q. A 12 V battery is connected to a circuit with a resistance of 4Ω. What is the current flowing through the circuit?
A.
2 A
B.
3 A
C.
4 A
D.
5 A
Show solution
Solution
Using Ohm's Law, I = V/R = 12 V / 4Ω = 3 A.
Correct Answer:
B
— 3 A
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Q. A 12 V battery is connected to a resistor of 3 ohms. What is the current flowing through the circuit?
A.
2 A
B.
3 A
C.
4 A
D.
5 A
Show solution
Solution
Using Ohm's Law, I = V/R = 12 V / 3 ohms = 4 A.
Correct Answer:
A
— 2 A
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Q. A 12 V battery is connected to a resistor of 4 ohms. What is the current flowing through the circuit?
A.
2 A
B.
3 A
C.
4 A
D.
5 A
Show solution
Solution
Using Ohm's Law, I = V/R = 12 V / 4 ohms = 3 A.
Correct Answer:
A
— 2 A
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Q. A ball is dropped from a height of 45 m. How long will it take to hit the ground? (g = 9.8 m/s²)
A.
3 s
B.
4 s
C.
5 s
D.
6 s
Show solution
Solution
Using the formula h = 0.5 * g * t², 45 = 0.5 * 9.8 * t², t² = 45 / 4.9, t ≈ 4 s.
Correct Answer:
B
— 4 s
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Q. A ball is dropped from a height of 45 m. How long will it take to reach the ground? (g = 9.8 m/s²)
A.
3 s
B.
4 s
C.
5 s
D.
6 s
Show solution
Solution
Using h = 0.5 * g * t², 45 = 0.5 * 9.8 * t², t² = 45 / 4.9, t ≈ 4 s.
Correct Answer:
B
— 4 s
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Q. A ball is dropped from a height of 45 m. How long will it take to reach the ground? (g = 10 m/s²) (2023)
A.
3 s
B.
4 s
C.
5 s
D.
6 s
Show solution
Solution
Time = √(2h/g) = √(2 × 45 m/10 m/s²) = √(9) = 3 s
Correct Answer:
B
— 4 s
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Q. A car accelerates from rest to a speed of 100 km/h in 10 seconds. What is its acceleration? (2023)
A.
5 m/s²
B.
10 m/s²
C.
15 m/s²
D.
20 m/s²
Show solution
Solution
Acceleration = (Final Speed - Initial Speed)/Time = (100 km/h × (1000 m/3600 s))/10 s = 5 m/s²
Correct Answer:
A
— 5 m/s²
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Q. A car accelerates from rest to a speed of 25 m/s in 5 seconds. What is its acceleration?
A.
2 m/s²
B.
3 m/s²
C.
4 m/s²
D.
5 m/s²
Show solution
Solution
Acceleration = (final speed - initial speed) / time = (25 m/s - 0) / 5 s = 5 m/s².
Correct Answer:
B
— 3 m/s²
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Q. A car travels 60 km in 1 hour. What is its speed in km/h? (2023)
A.
30 km/h
B.
60 km/h
C.
90 km/h
D.
120 km/h
Show solution
Solution
Speed = Distance/Time = 60 km/1 h = 60 km/h
Correct Answer:
B
— 60 km/h
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Q. A car travels 60 km in 1 hour. What is its speed in m/s?
A.
16.67 m/s
B.
20 m/s
C.
25 m/s
D.
30 m/s
Show solution
Solution
Speed = Distance/Time = 60 km/h = (60 * 1000 m)/(3600 s) = 16.67 m/s.
Correct Answer:
A
— 16.67 m/s
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Q. A cyclist covers 15 km in 30 minutes. What is the speed in km/h? (2023)
A.
20 km/h
B.
25 km/h
C.
30 km/h
D.
35 km/h
Show solution
Solution
Speed = Distance/Time = 15 km/(30/60) h = 30 km/h
Correct Answer:
B
— 25 km/h
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Q. A cyclist travels 30 km in 2 hours. What is the average speed in m/s?
A.
4.17 m/s
B.
5 m/s
C.
6 m/s
D.
7.5 m/s
Show solution
Solution
Average speed = Total distance / Total time = 30 km / 2 h = (30 * 1000 m) / (2 * 3600 s) = 4.17 m/s.
Correct Answer:
A
— 4.17 m/s
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Q. A cyclist travels at a speed of 12 m/s for 30 seconds. How far does he travel?
A.
300 m
B.
360 m
C.
400 m
D.
420 m
Show solution
Solution
Distance = Speed * Time = 12 m/s * 30 s = 360 m.
Correct Answer:
B
— 360 m
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Q. A cyclist travels at a speed of 15 m/s for 10 seconds. How far does he travel?
A.
100 m
B.
150 m
C.
200 m
D.
250 m
Show solution
Solution
Distance = Speed * Time = 15 m/s * 10 s = 150 m.
Correct Answer:
B
— 150 m
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Q. A runner completes a 400 m track in 50 seconds. What is their speed in m/s? (2023)
A.
6 m/s
B.
7 m/s
C.
8 m/s
D.
9 m/s
Show solution
Solution
Speed = Distance/Time = 400 m/50 s = 8 m/s
Correct Answer:
A
— 6 m/s
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Q. A train accelerates from rest to a speed of 72 km/h in 10 seconds. What is its acceleration?
A.
2 m/s²
B.
4 m/s²
C.
6 m/s²
D.
8 m/s²
Show solution
Solution
Convert speed to m/s: 72 km/h = 20 m/s. Acceleration = (final speed - initial speed) / time = (20 m/s - 0) / 10 s = 2 m/s².
Correct Answer:
A
— 2 m/s²
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Q. An object is thrown upwards with a velocity of 20 m/s. How high will it go before coming to rest? (g = 10 m/s²)
A.
20 m
B.
40 m
C.
50 m
D.
80 m
Show solution
Solution
Using the formula h = v²/(2g) = (20 m/s)² / (2 * 10 m/s²) = 20 m.
Correct Answer:
B
— 40 m
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Q. An object is thrown upwards with a velocity of 20 m/s. How high will it go before it starts to fall back down? (g = 10 m/s²)
A.
20 m
B.
30 m
C.
40 m
D.
50 m
Show solution
Solution
Using the formula h = v²/(2g) = (20 m/s)² / (2 * 10 m/s²) = 20 m.
Correct Answer:
B
— 30 m
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Q. An object is thrown vertically upwards with a speed of 20 m/s. How high will it go before coming to rest?
A.
20 m
B.
40 m
C.
50 m
D.
80 m
Show solution
Solution
Using the formula h = v²/(2g), where g = 10 m/s², h = (20 m/s)²/(2 * 10 m/s²) = 20 m.
Correct Answer:
B
— 40 m
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Q. An object moves with a uniform speed of 15 m/s. How far will it travel in 4 minutes? (2023)
A.
300 m
B.
600 m
C.
900 m
D.
1200 m
Show solution
Solution
Distance = Speed × Time = 15 m/s × (4 × 60 s) = 900 m
Correct Answer:
C
— 900 m
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Q. How many bones are there in an adult human body?
A.
206
B.
201
C.
210
D.
215
Show solution
Solution
An adult human body typically has 206 bones.
Correct Answer:
A
— 206
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Q. If 0.1 M NaOH is mixed with 0.1 M HCl, what will be the resulting pH?
Show solution
Solution
The reaction between NaOH and HCl neutralizes each other, resulting in a neutral solution with a pH of 7.
Correct Answer:
B
— 7
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Q. If 10 grams of sodium chloride (NaCl) is dissolved in 100 mL of water, what is the concentration in g/L?
A.
100 g/L
B.
10 g/L
C.
1 g/L
D.
0.1 g/L
Show solution
Solution
Concentration = (10 g / 0.1 L) = 100 g/L.
Correct Answer:
A
— 100 g/L
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Q. If 10 mL of a 0.1 M NaOH solution is mixed with 10 mL of a 0.1 M HCl solution, what will be the resulting pH?
Show solution
Solution
The NaOH and HCl neutralize each other, resulting in a neutral solution with a pH of 7.
Correct Answer:
B
— 7
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Q. If a 12 V battery is connected to a 4 ohm resistor, what is the current flowing through the circuit?
A.
2 A
B.
3 A
C.
4 A
D.
5 A
Show solution
Solution
Using Ohm's Law, I = V/R = 12 V / 4 ohm = 3 A.
Correct Answer:
B
— 3 A
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Q. If a 12 V battery is connected to a circuit with a resistance of 4 ohms, what is the current flowing through the circuit?
A.
2 A
B.
3 A
C.
4 A
D.
5 A
Show solution
Solution
Using Ohm's Law, I = V/R = 12 V / 4 ohm = 3 A.
Correct Answer:
A
— 2 A
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Q. If a car accelerates from rest to 25 m/s in 5 seconds, what is its acceleration?
A.
2 m/s²
B.
5 m/s²
C.
10 m/s²
D.
15 m/s²
Show solution
Solution
Acceleration = (final velocity - initial velocity) / time = (25 m/s - 0) / 5 s = 5 m/s².
Correct Answer:
B
— 5 m/s²
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Q. If a car accelerates from rest to 30 m/s in 5 seconds, what is its acceleration?
A.
3 m/s²
B.
5 m/s²
C.
6 m/s²
D.
10 m/s²
Show solution
Solution
Acceleration = (final velocity - initial velocity) / time = (30 m/s - 0) / 5 s = 6 m/s².
Correct Answer:
A
— 3 m/s²
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Q. If a car accelerates from rest to a speed of 25 m/s in 5 seconds, what is its acceleration?
A.
2 m/s²
B.
3 m/s²
C.
4 m/s²
D.
5 m/s²
Show solution
Solution
Acceleration = (final speed - initial speed) / time = (25 m/s - 0) / 5 s = 5 m/s².
Correct Answer:
B
— 3 m/s²
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Q. If a current of 2 A flows through a resistor of 5Ω, what is the voltage across the resistor?
A.
5 V
B.
10 V
C.
15 V
D.
20 V
Show solution
Solution
Using Ohm's Law, V = I * R = 2 A * 5Ω = 10 V.
Correct Answer:
B
— 10 V
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