Question: What is office memorandum? Answer: A communication issued by an appropriate authority stating the policy or decision of the government. Question: What is Parliament? Answer: An assembly of elected representatives exercises supreme political authority on be-hay people is known as the Parliament. Question: Who was the head of Second …

Question: Which contains more heat: 1 kg. of Ice at 0°C or 1 kg. of water of o°C? Give reason. Answer: 1 kg. of water of contains more heat because it has latent heat stored in it. Question: Which contains more heat, 1 kg. of water at 100°C or 1 kg. …

India is the land of the brave warriors, we fight to claim what is ours. Our Indian army is full of such warriors and in the year 1999, the world witnesses the bravery of our Indian Army when we conquered the Kargil War against Pakistan. To celebrate this victory Kargil …

Last year, during the summer vacation, I had a chance to visit the Taj, in the company of some friends. It is an important historical building. The  Taj Mahal stands on the south bank of the Jamuna at Agra. It was built by the Mughal Emperor Shah Jahan in memory of …

Question: Name any two fodder crops. Answer: Berseem, oats or Sudan grass are raised as food for the livestock, called fodder crops. Question: What do you understand by photoperiod of sunlight? Answer: Photoperiod are related to the duration of sunlight required for plant growth. Question: Name two kharif crops. Answer: …

Question: What is the value of gravitational constant G: (1) On the earth, (2) On the moon. Answer:  6.67 × 10-11  Nm2 kg2 6.67 × 10-11  Nm2 kg2 Question: Which force is  responsible for the moon revolving round the earth? Answer: Gravitational force. Question: Name the scientist who gave the three laws of …

Question: Define health. Answer: Health means a state of physical, mental and social well-being. Question: Define disease. Answer: Disease means being uncomfortable. Question: What do you mean by symptoms of disease? Answer: Symptoms of disease are the signs of a disease which indicates the presence of a particular disease. Question: What …

Books are our best friends. They are a food for the mind. They console us sorrow and make us forget the worries of life. Of all the books I have read, I like the Gita most. It is a holy book of the Hindus. It is my true guide and …

Sound – 9th Class NCERT CBSE Science Chapter 12 Question: Can sound travel through: Carbon Water Answer: yes yes Question: Can sound travel through vacuum? Answer: No, sound cannot travel through vacuum. Question: Name the type of waves which are used by astronauts to communicate with one another on moon (or in …

Question: Does work done depend upon the velocity of the body. Answer: No. Question: State the law of conservation of energy. Answer: It states that energy can neither be created nor destroyed. It can only change its form. Question: In a tug-of-war one team gives way to the other. What …