CLASS-VI CBSE/ICSE

  ✅ OBJECTIVE TYPE QUESTIONS: 1. Choose the correct answer: (i) Nucleus is absent in: ✅ (a) RBCs (ii) The only artery which carries deoxygenated blood is: ✅ (b) Pulmonary artery (iii) Sphygmomanometer measures: ✅ (e) Blood pressure (iv) Pulmonary vein carries: ✅ (a) Oxygenated blood (v) The blood tastes saltish due to the presence of dissolved: ✅ (a) Sodium chloride (vi) Which of the following is an organ of the human cardiovascular system? ✅ (b) Heart (vii) Haemoglobin consists of: ✅ (c) Iron + Proteins (viii) Which of the following blood vessels carries deoxygenated blood to the heart? ✅ (d) Vena cavae ✍️ 2. Fill in the blanks: (a) The colour of a red blood cell is due to haemoglobin (b) The two lower chambers of the heart are called ventricles (c) The blood plasma contains dissolved substances such as proteins and salts (d) The pulmonary artery takes the blood from the ventricles to the lungs (e) The instrument used to find out the blood pressure is kno...

  Work and Energy – Short Q&A Q: What is work? A: Work is done when a force moves an object over a distance. Q: What is the formula of work? A: Work = Force × Distance Q: In which unit is work measured? A: Work is measured in joules. Q: What is energy? A: Energy is the ability to do work. Q: Name two main forms of energy. A: Kinetic energy and potential energy. Q: What is kinetic energy? A: Energy possessed by a moving object. Q: What is potential energy? A: Energy stored in an object due to its position or shape. ✅ Simple Machine – Short Q&A Q: What is a machine? A: A machine is a tool that makes work easier. Q: What is a simple machine? A: A simple machine is a basic device that helps us do work easily. Q: Name any four simple machines. A: Lever, pulley, inclined plane, wheel and axle. Q: What is the function of a simple machine? A: To make work easier by changing the direction or amount of force. Q: What is t...