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Q1. The science that deals with growing crops and farming is called:
Agricultural science is the study of farming and growing crops. It helps farmers produce more food using better methods.
Q2. The science that deals with the study of living things is called:
Biological science is the study of all living things like plants, animals and humans. It helps us understand how life works.
Q3. The science that deals with the study of air and space travel is called:
Aerospace science is the study of flying machines like aeroplanes and rockets. It helps us travel in the air and explore space.
Q4. The Green Revolution was a movement to:
The Green Revolution introduced high-yielding seeds and modern farming methods. It helped India grow more wheat and rice.
Q5. The White Revolution was a movement to:
The White Revolution is also called the Operation Flood. It helped India become one of the largest milk producers in the world.
Q6. Chemical fertilisers are used by farmers to:
Chemical fertilisers add nutrients to the soil so that crops grow better. They help increase food production.
Q7. Insecticides are chemicals used to:
Insecticides are sprayed on crops to kill harmful insects. They protect the crops from being destroyed.
Q8. Pesticides are chemicals used to:
Pesticides kill pests like insects, weeds and fungi. They protect crops from diseases and damage.
Q9. The hazard of using chemical fertilisers is:
Chemical fertilisers can make the soil less fertile over time. They also pollute water bodies when washed away by rain.
Q10. The hazard of using insecticides and pesticides is:
Insecticides and pesticides contain harmful chemicals. These can poison the food we eat and cause many diseases.
Q11. The Industrial Revolution was a time when:
The Industrial Revolution brought machines that could make things faster. It changed how goods were produced in factories.
Q12. The Consumer Revolution means:
The Consumer Revolution made many goods available in shops. People could now buy more products for their daily needs.
Q13. The atomic bomb was used in:
Atomic bombs were used during World War II in Japan. They destroyed the cities of Hiroshima and Nagasaki.
Q14. The explosion of atomic bombs caused:
Atomic bombs are very dangerous weapons. They cause huge destruction, kill many people and harm the environment.
Q15. The Bhopal Gas Tragedy happened in which country?
The Bhopal Gas Tragedy happened in India in 1984. A gas leak from a factory killed thousands of people.
Q16. The gas that leaked in the Bhopal Gas Tragedy was:
Methyl isocyanate was a poisonous gas that leaked from the Union Carbide factory. It caused the death of many people.
Q17. The Chernobyl tragedy happened in which country?
The Chernobyl tragedy happened in 1986 in Ukraine, which was part of the Soviet Union. A nuclear reactor exploded there.
Q18. The Chernobyl tragedy was caused by:
A nuclear reactor at Chernobyl exploded due to a technical fault. It released huge amounts of radioactive material into the air.
Q19. Chemical weapons are weapons that:
Chemical weapons contain toxic chemicals that can kill or injure people. They are very dangerous and are banned by many countries.
Q20. The use of chemical weapons is:
Chemical weapons are so dangerous that many countries have agreed not to use them. They are banned by international agreements.
Q21. The Green Revolution was started by:
Dr. M.S. Swaminathan is known as the father of the Green Revolution in India. His work helped increase food production in the country.
Q22. The White Revolution in India is also known as:
Operation Flood was the programme that led to the White Revolution. It increased milk production through better dairy farming.
Q23. The father of the White Revolution in India is:
Dr. Verghese Kurien is known as the father of the White Revolution. He started the Amul dairy cooperative that changed India’s milk production.
Q24. Agricultural science helps us to:
Agricultural science teaches us how to grow healthy crops and raise animals for food. It also helps us protect plants from diseases.
Q25. Aerospace science helps us to:
Aerospace science teaches us about aeroplanes, rockets and space. It helps us travel in the sky and explore the universe.
Q26. Biological science helps us to:
Biological science teaches us about plants, animals and human body. It helps us understand how living things live and grow.
Q27. The industrial revolution changed the world by:
The industrial revolution brought machines to factories. This made goods cheaper and produced in large numbers.
Q28. The consumer revolution means people could:
Due to the consumer revolution, many new goods were available in the market. People could now buy different products for their needs.
Q29. Atomic explosions in World War II happened in:
The United States dropped atomic bombs on Hiroshima and Nagasaki in 1945. These explosions ended World War II.
Q30. The Bhopal Gas Tragedy caused many people to suffer from:
The poisonous gas affected the lungs of thousands of people. Many died immediately and others suffered for years.
Q31. The Chernobyl tragedy led to:
The Chernobyl explosion released dangerous radioactive materials into the air. This polluted the land, water and air for many years.
Q32. Chemical fertilisers should be used:
Chemical fertilisers are helpful but should be used carefully. Overusing them can harm the soil and our health.
Q33. The use of chemical fertilisers and pesticides can lead to:
These chemicals wash into rivers and lakes. This pollutes the water and harms fish and other water animals.
Q34. Green Revolution helped India become:
The Green Revolution helped India produce enough wheat and rice for its people. India no longer had to depend on other countries for food.
Q35. Organic farming is better because it:
Organic farming uses natural manure and compost instead of chemicals. This produces healthier food and keeps the environment safe.
Q36. The Bhopal Gas Tragedy happened in the year:
The Bhopal Gas Tragedy occurred on the night of December 2-3, 1984. It is one of the worst industrial disasters in history.
Q37. The Chernobyl tragedy happened in the year:
The Chernobyl nuclear disaster happened on April 26, 1986. It is considered the worst nuclear accident in history.
Q38. Chemical weapons can cause:
Chemical weapons contain poisonous substances that harm the human body. They can cause blindness, breathing problems and death.
Q39. The study of how to make aeroplanes and rockets is part of:
Aerospace science includes the design and building of aircraft and spacecraft. It helps humans explore the sky and space.
Q40. The study of how plants and animals live is part of:
Biological science studies all forms of life. It helps us understand how plants grow and how animals survive.
Q41. The overuse of chemical pesticides can:
Pesticides not only kill harmful pests but also useful insects. Bees help in pollination and their loss affects our food.
Q42. The industrial revolution began in which country?
The Industrial Revolution began in England in the 18th century. It then spread to other parts of the world.
Q43. Atomic energy can be used for:
Atomic energy can be useful when used for generating power. But it can be very destructive when used in bombs.
Q44. The hazards of chemical fertilisers include:
Chemical fertilisers make the soil lose its natural nutrients over many years. This makes the land less fertile for future crops.
Q45. World Wars are called so because:
World Wars were fought between many nations across the globe. They affected millions of people in different countries.
Q46. The use of chemical weapons is banned because:
Chemical weapons cause immense pain and suffering to people. International laws ban their use to protect humanity.
Q47. The Bhopal Gas Tragedy is a warning about:
The tragedy shows how dangerous factories can be if safety rules are not followed. It reminds us to be careful around industries.
Q48. The Chernobyl tragedy is a warning about:
The Chernobyl disaster shows the dangers of nuclear power. It teaches us that safety is very important in nuclear plants.
Q49. Prevention of hazards from chemicals includes:
Safety rules help protect workers from dangerous chemicals. Wearing protective gear prevents health problems.
Q50. To avoid harm from fertilisers and pesticides, we should:
Using too many chemicals is harmful. We should use them only when needed and try organic alternatives.
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Q51. The Green Revolution introduced the use of:
High-yielding seeds produced more grains per plant. This was the main reason for the success of the Green Revolution.
Q52. The White Revolution helped dairy farmers by:
The White Revolution gave farmers better breeds of cows. It also set up milk collection centres in villages.
Q53. Industrial waste should be treated before:
Industrial waste contains harmful chemicals. It must be treated so that it does not pollute rivers and water bodies.
Q54. The atomic bomb is also called:
Atomic bombs use nuclear reactions to create huge explosions. They release massive amounts of energy and radiation.
Q55. Natural disasters can be predicted using:
Satellites in space can detect changes in the weather. This helps us predict cyclones, floods and other natural disasters.
Q56. The Chernobyl tragedy caused many people to:
The radiation released from Chernobyl caused many health problems. People developed cancer and other serious diseases.
Q57. The Bhopal Gas Tragedy happened due to:
A storage tank at the Union Carbide factory leaked poisonous gas. This caused one of the worst industrial disasters in history.
Q58. One way to reduce the use of chemical pesticides is:
Natural pesticides like neem extract are safer for health. Biological control means using natural enemies of pests to protect crops.
Q59. The study of how to produce more food safely is part of:
Agricultural science finds better and safer ways to grow food. It teaches us to use fertilisers and pesticides carefully.
Q60. Lessons learned from the Bhopal and Chernobyl tragedies include:
Both tragedies showed what happens when safety rules are ignored. They remind us to be very careful with dangerous materials.