These essential MCQ questions are selected from the most important topics in CBSE Class 7 Science examinations 2026. Sections include Nutrition in Plants and Animals, Heat, Acids and Bases, Weather, Motion and Time, and Forests as per NCERT syllabus. For truely unlimited daily MCQ practice, visit Vooo AI Education.
🌿 CBSE Class 7 Science
1Plants that make their own food are called:
Answer: C — Autotrophs
Autotrophs (or autotrophic organisms) are those that produce their own food using sunlight, water and carbon dioxide through photosynthesis. Plants, algae and some bacteria are autotrophs. Animals are heterotrophs — they depend on others for food.
Autotrophs (or autotrophic organisms) are those that produce their own food using sunlight, water and carbon dioxide through photosynthesis. Plants, algae and some bacteria are autotrophs. Animals are heterotrophs — they depend on others for food.
2Which instrument measures temperature?
Answer: B — Thermometer
A thermometer measures temperature. A barometer measures atmospheric pressure, a hygrometer measures humidity, and an anemometer measures wind speed. Clinical thermometers use mercury or digital sensors to measure body temperature.
A thermometer measures temperature. A barometer measures atmospheric pressure, a hygrometer measures humidity, and an anemometer measures wind speed. Clinical thermometers use mercury or digital sensors to measure body temperature.
3Litmus is a natural indicator obtained from:
Answer: B — Lichens
Litmus is a natural acid-base indicator extracted from lichens (a symbiotic organism of fungi and algae). Red litmus turns blue in bases; blue litmus turns red in acids. Neutral solutions do not change the colour of litmus.
Litmus is a natural acid-base indicator extracted from lichens (a symbiotic organism of fungi and algae). Red litmus turns blue in bases; blue litmus turns red in acids. Neutral solutions do not change the colour of litmus.
4The SI unit of speed is:
Answer: C — m/s
The SI unit of speed is metres per second (m/s). Speed = Distance / Time. While km/h is commonly used in everyday life, m/s is the standard scientific unit. 1 m/s = 3.6 km/h.
The SI unit of speed is metres per second (m/s). Speed = Distance / Time. While km/h is commonly used in everyday life, m/s is the standard scientific unit. 1 m/s = 3.6 km/h.
5Which nutrient provides energy to our body?
Answer: C — Carbohydrates
Carbohydrates are the primary source of energy for the human body. They are broken down into glucose, which cells use for energy. Proteins build and repair tissues, vitamins and minerals regulate body functions, and water aids all metabolic processes.
Carbohydrates are the primary source of energy for the human body. They are broken down into glucose, which cells use for energy. Proteins build and repair tissues, vitamins and minerals regulate body functions, and water aids all metabolic processes.
6Land breeze blows from:
Answer: B — Land to sea during night
Land breeze blows from land to sea during the night, because land cools faster than sea after sunset, making the air over land cooler and denser. Sea breeze blows from sea to land during the day as land heats faster.
Land breeze blows from land to sea during the night, because land cools faster than sea after sunset, making the air over land cooler and denser. Sea breeze blows from sea to land during the day as land heats faster.
7Woollen clothes keep us warm because wool:
Answer: B — Is a bad conductor of heat
Wool is a bad conductor (poor conductor) of heat, meaning it does not allow heat to pass through easily. It traps air between its fibres, which also acts as an insulator. This prevents body heat from escaping, keeping us warm.
Wool is a bad conductor (poor conductor) of heat, meaning it does not allow heat to pass through easily. It traps air between its fibres, which also acts as an insulator. This prevents body heat from escaping, keeping us warm.
8Forests are called "lungs of the Earth" because they:
Answer: B — Produce large amounts of oxygen
Forests are called the lungs of the Earth because they absorb carbon dioxide and release large amounts of oxygen through photosynthesis. They also regulate climate, maintain the water cycle and support biodiversity.
Forests are called the lungs of the Earth because they absorb carbon dioxide and release large amounts of oxygen through photosynthesis. They also regulate climate, maintain the water cycle and support biodiversity.
9Which organ in the human body produces bile?
Answer: C — Liver
Bile is produced by the liver and stored in the gall bladder. It is released into the small intestine to help digest fats by breaking large fat globules into smaller droplets — a process called emulsification.
Bile is produced by the liver and stored in the gall bladder. It is released into the small intestine to help digest fats by breaking large fat globules into smaller droplets — a process called emulsification.
10A simple pendulum completes one oscillation in 2 seconds. Its time period is:
Answer: B — 2 seconds
The time period of a pendulum is the time taken to complete one full oscillation (swing back and forth). If one oscillation takes 2 seconds, the time period = 2 seconds. Frequency = 1/Time Period = 0.5 Hz.
The time period of a pendulum is the time taken to complete one full oscillation (swing back and forth). If one oscillation takes 2 seconds, the time period = 2 seconds. Frequency = 1/Time Period = 0.5 Hz.
Ready to ace CBSE Class 7 Science 2026?
Get free daily CBSE Class 7 Science MCQs. Unlimited practice starts from just ₹120/month.
See Plans — Starts at ₹120