Free NCERT Solutions
The scholastic aptitude test (SAT) of NTSE exam covers a variety of subjects like science, maths and social studies. These quizzes also benefit students preparing for other competitive exams. The paper on general knowledge...
Answer the following questions. 1. The hardness of the bone tissue is due to the phosphates and carbonates of which of the following pairs of elements? a) calcium and sodium b) magnesium and sodium...
Answer the following questions. 1. Which of the following minerals is used in the nuclear reactors? a) zircon b) manganese ore c) mica d) bauxite 2. Among the following, which is the purest form...
Answer the following questions. 1. Which of the following is a device for storing electric charge? a) capacitor b) counter c) compass d) cyclotron 2. Which of the following is a device for the...
Answer the following questions. 1. Which of the following is the working principle of a washing machine? a) centrifugation b) dialysis c) reverse osmosis d) diffusion 2. The tendency of a liquid drop to...