Tag Archives: NCERT CBSE Class 9 Science Solutions

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. …

Question: Name one metal and one none-metal which exist as liquids at room temperature. Answer: Mercury and Bromine Question: Name a metal which is soft and non-metal which is hard? Answer: Sodium and diamond Question: Name a non-metal which is a good conductor of electricity. Answer: Graphite Question: Name a …

Question: How are plant cells different from animal cells? Answer: Plant Cell: These cells contain cell wall also for protection. Chloroplasts a are present. Centrosomes are not present. Lysosomes are rarely present. Nucleus is present in the side of the plant cell. Animal Cell: No cell wall, only cell membrane …

Question: Name the tissues responsible for the movement of the body. Answer: Muscle tissue and nervous tissue Question: How does neuron look like? Answer: A neuron is the unit cell of nervous tissue. It is a thread-like structure with cell body and axon. Question: Name the types of simple tissues. …

Question: An object has move through a distance. Can it has zero displacement? If yes, support your answer with example. Answer: Yes the object inspite of moving through a distance can have zero displacement. Example, if an object travels from point ‘A’ and reaches to the same point ‘A’, then …

Question: Define force. Answer: It is a push or pull on an object that produces acceleration in the body on which it acts. Question: What is S.I. unit of force? Answer: S.I. unit of force is Newton. Question: Define one Newton. Answer: A force of one Newton produces an acceleration …

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: Who wrote the book “The Origin of Species”? Answer: Charles Darwin in 1859. Question: Who proposed the classification of organisms into 5 kingdom? Answer: Robert Whittaker (1959). Question: Define species. Answer: All organisms that are similar to breed and perpetuate. Question: Give example of the organism belonging to Monera and Protista Kingdom. …

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 …