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question_answer1) Which one of the following is a matter?
question_answer2) We know that all the substances are made up of small particles and the particles are connected with each other with a force. In which one of the following the particles are connected with the greatest force?
question_answer3) Look at the following figure carefully. Which one of the following represents electrons?
question_answer4) In which one of the following molecules, atoms of different element are joined together?
question_answer5) When we cool a substance to a certain temperature, state of the substance gets changed. If the substance is gas then on cooling it will convert into____.
question_answer6) How many atoms of hydrogen are there in one molecule of ammonia?
question_answer7) When we heat a substance, force of attraction among the particles gets____.
question_answer8) Which one of the following properties is correct for liquid?
question_answer9) Neutron is one of the three basic fundamental particles by which a metal is made up of. Where does neutron lie in the atom?
question_answer10) Which one of the following statements is true? Statement 1: In physical change, original substance we can get back. Statement 2: In chemical change, original substance we cannot get back.
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