Question

1. State whether the following statement is true or false. Even when a body covers equal distances in equal time intervals, its velocity can be variable. * 1 point True False 2. A body is thrown vertically upwards and is caught back. What is its displacement and distance travelled? * 1 point Displacement= zero, Distance= twice the height Displacement= distance, Distance= height Displacement= distance, Distance= displacement Displacement= zero, Distance= zero 3. Which of the following statement is correct regarding velocity and speed of a moving body? * 1 point (a) Velocity of a moving body is always higher than its speed (b) Speed of a moving body is always higher than its velocity (c) Speed of a moving body is its velocity in a given direction (d) Velocity of a moving body is its speed in a given direction 4. Motion of a train approaching a station is uniform or non-uniform? * 1 point Uniform Non-Uniform 5. Name the SI unit of velocity. * 1 point metre metre per second metre per second square second 6. If the distance travelled by a body is directly proportional to time it is travelling with ____________ * 1 point uniform motion or uniform speed or constant speed uniform speed constant speed All of the above 7. If the displacement of an object is zero then the distance travelled by the object is zero. * 1 point True False 8. 1 u or 1 amu means * 1 point (a) 1/12th mass of C-12 atoms (b) Mass of C-12 atom (c) Mass of O-16 atom (d) Mass of Hydrogen molecule 9. A sample of NH3 molecule irrespective of source contains 82.35% Nitrogen and 17.65% of Hydrogen by mass. This data supports: * 1 point (a) Law of Conservation of Mass (b) Law of Multiple Proportions (c) Law of Definite Proportions (d) Avogadro’s Law 10. The atomic mass of sodium is _______ * 1 point (a) 4 (b) 2 (c) 23 (d) 32 11. What is the symbol of Copper? * 1 point (a) Co (b) Cu (c) Ca (d) C 12. Which postulate of Dalton’s atomic theory is the result of the law of conservation of mass? * 1 point (a) All matter is made of very tiny particles called atoms. (b) Atoms are indivisible particles, which cannot be created or destroyed in a chemical reaction. (c) Atoms of a given element are identical in mass and chemical properties. (d) Atoms combine in the ratio of small whole numbers to form compounds. 13. What is the Latin name of the Iron, Sodium and Potassium? * 1 point (a) Natrium, Ferrum, Kalium (b) Natrium, Kalium, Ferrum (c) Ferrum, Kalium, Natrium (d) Ferrum, Natrium, Kalium 14. A cell will swell up if * 1 point (a) The concentration of water molecules in the cell is higher than the concentration of water molecules in the surrounding medium. (b) The concentration of water molecules in the surrounding medium is higher than the concentration of water molecules in the cell. (c) The concentration of water molecules is same in the cell and in the surrounding medium (d) The concentration of water molecules does not matter. 15. The process of plasmolysis in plant cell is defined as: * 1 point (a) Breakdown of plasma membrane in hypotonic solution (b) Shrinkage of cytoplasm in hypertonic medium. (c) Shrinkage of Nucleoplasm. (d) None of these. 16. Cell is the structural and functional unit of life. The word cell is derived from the Latin word ‘cellular’ which means “a little room”. Can you name the scientist who coined the term cell? * 1 point (a) Robert Hooke (b) Anton Von Leeuwenhoek (c) Robert Brown (d) Ernst Haeckel 17. In a test, a teacher collected the answers written by four students as the definition of osmosis as given below. Read carefully and select the correct one. * 1 point (a) Movement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane. (b) Movement of solvent molecules from its higher concentration to lower concentration. (c) Movement of solvent molecules from higher concentration to lower of solution through a permeable membrane. (d) Movement of solute molecules from lower concentration to higher concentration of solution through a semipermeable membrane. 18. Anjali wanted to eat rice and kidney bean (rajmah). She requested her mother to cook the same on next day. At night her mother took a cup of kidney beans and put them in a container having some water and the kept the container covered overnight. Next day it was observed that the kidney beans got swollen and were ready to be cooked. What is this phenomenon due to which kidney beans got swollen is known as? (i) Osmosis (ii) Diffusion (iii) Endosmosis (iv) Exosmosis Choose the correct option among the following: * 1 point (a) Only (iii) (b) Both (i) and (iii) (c) Both (i) and (iv) (d) Only (i) 19. 1 μm is * 1 point (a) 10-6 m (b) 10-9 m (c) 10-10 m (d) 10-3 m 20. The process of …………… helps in movement of carbon dioxide or oxygen across the cell membrane. * 1 point (a) Osmosis (b) Endosmosis (c) Exosmosis (d) Diffusion ​

Answer 1

$\huge\boxed{\dag\sf\red{ANSWER}\dag}$

Here are sequence of correct Option

• (a)

• (c)

• (b)

• (d)

• (a)

• (a)

• (b)

$\huge\boxed{\dag\sf\red{Thanks}\dag}$