Q.1 Plants absorb most part of water needed by them through their
Q.2 The lifespan of Red Blood Cells is __________ days.
Q.3 Atomic clock is used to measure ________ intervals of time.
Q.4 The unit of efficiency is
Q.5 Detail study of internal organs at level of tissue with the help of microscope is called
Q.6 The SI unit of thermodynamic temperature is
Q.7 X-rays were discovered by
Q.8 The Nobel prize in physics for the discovery of the law of photoelectric effect was awarded to
Q.9 The respiratory problem most common in smokers is
Q.10 The most abundant element in the earths crust is oxygen. The second most abundant element in the earths crust is
Q.11 The principal constituent of the atmosphere of the Earth is?
Q.12 The most densest substance on the Earth is __________.
Q.13 The natural fats and oils are composed of
Q.14 1 nanometer = ?
Q.15 The energy value of food is measured in
Q.16 The SI unit of Heat is
Q.17 The nearest planet to the Sun is
Q.18 When white light is passed through a prism, it splits into __________ colours.
Q.19 The unit of current is
Q.20 Movement of cell against concentration gradient is called
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