Book Back Question and Answers

Science : Term 3 Unit 1 : Plants in Daily Life I. Choose the correct answer: 1. One of the following birds is an example of plant pollinator Ans : Humming bird 2. Natural Mosquito repellant is  Ans :  Neem 3. Which of the following is not a root ? Ans : Potato 4. Which of the following is not a root […]

Science : Term 3 Unit 1 : Our Environment I. Choose the correct answer: 1. Identify the fresh water ecosystem. Ans : All of them 2. Producers are_______________ Ans :  Plants 3. It is a biodegradable waste Ans : Coconut Shell 4. It is an undesirable change that occurs in air and water Ans : Pollution 5. Usage of chemical pesticides and fertilisers causes

Science : Term 3 Unit 3 : Chemistry in Everyday life I. Choose the correct answer: 1. Soaps were originally made from ___________. Ans : animal fats and vegetable oils 2. The saponifi cation of a fat or oil is done using _______________ solution for hot process Ans :  sodium hydroxide 3. Gypsum is added to the cement for ______________________.

Science : Term 3 Unit 2 : Water I. Choose the correct answer: 1. Around 97% of water available on earth is water. Ans : salty 2. Which of the following is not a part of water cycle? Ans :  distillation 3. Which of the following processes add water vapour to the atmosphere? i. Transpiration ii. Precipitation iii. Condensation iv.

Science : Term 3 Unit 1 : Magnetism I. Choose the correct answer: 1. An object that is attracted by magnet. Ans : plain pins 2. People who made mariner’s compass for the first time. Ans : Chinese 3. A freely suspended magnet always comes to rest in the _____________ direction. Ans : North – south 4. Magnets lose their properties when

Science : Term 2 Unit 7 : Parts of Computer I. Choose the correct answer: 1. Which one of the following is an output device? Ans : Speaker 2. Name the cable that connects CPU to the Monitor Ans : VGA cable 3. Which one of the following is an input device? Ans : keyboard 4. Which one of the following is

Science : Term 2 Unit 6 : Human Organ systems I. Choose the correct answer: 1. Circulatory system transports these throughout the body Ans : All of these 2. Main organ of respiration in human body is Ans : Lungs 3. Breakdown of food into smaller molecules in our body is known as Ans : Digestion II. Fill in the blanks

Science : Term 2 Unit 5 : The Cell I. Choose the correct answer: 1. The unit of measurement used for expressing dimension (size) of cell is ____ Ans : micrometer 2. Under the microscope Priya observes a cell that has a cell wall and distinct nucleus. The cell that she observed is Ans : a plant cell 3. A

Science : Term 2 Unit 4 : Air I. Choose the correct answer: 1. __________ is the percentage of nitrogen in air. Ans : 78% 2. Gas exchange takes place in plants using ___________. Ans : Flower 3. The constituent of air that supports combustion is __________. Ans : Oxygen 4. Nitrogen is used in the food packaging industry because it _________.

Science : Term 2 Unit 3 : Changes Around Us I. Choose the correct answer: 1. When ice melts to form water, change occurs in its Ans : state 2. Drying of wet clothes in air is an example of Ans : physical change 3. Formation of curd from milk is Ans : an irreversible change 4. Out of the following an