REPRODUCTION-B TOTAL NO. OF QUESTIONS:50 Exam Q1. What is the first stage in the development of a baby after fertilisation? A. Embryo B. Zygote C. Foetus D. Infant Q2. What does the zygote develop into next? A. Seed B. Embryo C. Adult D. Spore Q3. What is an embryo? A. A fully grown baby B. […]
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📘 Study MCQs Q1. The outermost solid layer of the Earth is called the: A. Mantle B. Core C. Crust D. Magma AnswerC. CrustDetails CloseThe crust is the thin, solid, outermost layer of the Earth. It is made of rocks and minerals. The crust is not a single piece but is broken into large sections
📘 Study MCQs Q1. When a plastic ruler is rubbed with a woollen cloth, it gains the ability to attract small pieces of paper. This is called: A. Magnetism B. Charging by friction (rubbing) C. Heating D. Evaporation AnswerB. Charging by friction (rubbing)Details CloseWhen two objects are rubbed together, electrons can transfer from one object
📘 Study MCQs Q1. Which of the following is a disadvantage of friction? A. We can walk without slipping B. Brakes in vehicles work C. Moving parts of machines wear out D. We can write with a pen AnswerC. Moving parts of machines wear outDetails CloseFriction causes the surfaces in contact to wear away over
📘 Study MCQs Q1. Friction is caused mainly due to: A. Smoothness of surfaces B. Irregularities on the surfaces in contact C. Colour of the surfaces D. Temperature of the surfaces AnswerB. Irregularities on the surfaces in contactDetails CloseEven surfaces that appear smooth have tiny bumps and grooves when seen under a microscope. When two
