Subjectwise MCQ
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Govt. Examwise MCQ
218 Science MCQ Questions in english हिन्दी
Read science multiple choice questions for the various types of competitive exams. These science questions will help students to prepare for their exams. Improve your Science subject knowledge by reading these science questions.
Which disease affects the respiratory system?
Asthma causes narrowing of the airways, making breathing difficult.
What is the function of red blood cells (RBCs)?
RBCs contain hemoglobin that binds oxygen.
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Which hormone is known as the ‘stress hormone’?
Adrenaline increases heart rate and energy during stress.
Which acid is present in vinegar?
Acetic acid gives vinegar its sour taste and smell.
The chemical formula of lime water is:
Lime water is calcium hydroxide used in tests for CO₂.
Which disease is caused by a protozoa?
Malaria is caused by Plasmodium, spread by Anopheles mosquitoes.
Which gland is called the “master gland”?
The pituitary gland controls many other endocrine glands.
Which part of the ear helps maintain body balance?
Semicircular canals in the inner ear detect motion and balance.
Which gas is most abundant in the atmosphere?
Nitrogen makes up ~78% of the Earth's atmosphere.
The process by which plants lose water is called:
Transpiration occurs mainly through leaf stomata.
Which part of the eye controls the amount of light entering it?
The iris adjusts the size of the pupil to regulate light entry.
Which blood cell fights infections?
White blood cells are the defense soldiers of the body.
Which vitamin helps in blood clotting?
Vitamin K plays a key role in the clotting process.
The chemical name of baking soda is:
Used in cooking and antacids.
Which metal is used to make aircraft bodies?
Aluminum is light, strong, and corrosion-resistant.
Which type of lens is used in a magnifying glass?
A convex lens converges light and magnifies objects.
Speed of light in vacuum is approximately:
The speed of light is ~3 × 10⁸ m/s.
Which color of light has the highest energy?
Violet has the shortest wavelength and highest frequency.
Which instrument is used to measure atmospheric pressure?
A barometer measures air pressure in units like mmHg or hPa.
Which late Bihar-born scientist, a key member of the Tejas aircraft project, launched “Mobile Science Lab” for rural education?
A Padma Shri awardee from Darbhanga, he contributed to the Tejas fighter jet and initiated science outreach programmes across Bihar with his Mobile Science Lab
Which greenhouse gas is emitted during excessive urea use in U.P.'s agriculture?
Overuse of nitrogenous fertilizers like urea releases nitrous oxide—a potent greenhouse gas. It contributes to climate change and soil degradation
What is the function of Krishi Vigyan Kendras (KVKs) in U.P.?
KVKs are agricultural extension centers that provide training and tools to farmers. They bridge the gap between research institutions and actual farm practices.
Which agricultural practice is encouraged in eastern U.P. for conserving water?
Drip irrigation helps conserve water and improve crop yield. It is being promoted especially in water-stressed and flood-affected areas.
Which water-borne disease is common in flood-prone districts of U.P.?
Cholera outbreaks occur in flood-affected areas due to contaminated drinking water. Sanitation and clean water supply are crucial to prevent it.
Which renewable energy source is being promoted in Bundelkhand region?
Due to high sunshine and poor infrastructure, solar energy is ideal for Bundelkhand. Government schemes promote solar pumps and off-grid solutions here.
Which city in U.P. has a government biotechnology research center?
The Biotech Park in Lucknow promotes research and industry collaboration in the field of biotechnology. It supports innovation in agriculture and healthcare.
Which bacteria causes Japanese Encephalitis, a recurring epidemic in eastern U.P.?
Japanese Encephalitis, transmitted by mosquitoes, is caused by the Flavivirus. It is a major public health concern in Gorakhpur and neighboring districts.
What is the primary cause of smog in cities like Kanpur and Lucknow during winters?
In winter, temperature inversions trap pollutants near the surface. Crop burning in nearby areas and vehicle emissions worsen air quality, creating smog.
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