a)Which of the following activities involves digital signal?1

b)Which of the following group belongs to Plant Kingdom?1

c)Which blood vessel carries the deoxygenated blood from the heart to the lungs?1

d)Which of the following reptiles is NOT included in the list of protected animals of Nepal?1

e)What will be the weight of an object on the planet having acceleration due to gravity 2.5 m/s² if the object weighs 700 N on the Earth?1

f)Why does an empty plastic bottle forcefully pushed into the water come up when it is released?1

g)Study the given figure and identify colour of the x and y.1

h)Which theory is closely related to Hubble's study?1

i)Which of the following is the alkyne having 5 carbon atoms?1

j)Which of the following is a group of rodenticide?1

a)Which is the dependent variable in the experiment where solubility of sugar is measured at different temperatures?1

b)Arrange the following animals in the order of evolution. Cockroach, earthworm, fish, frog.1

c)What is high sistolic pressure?1

d)State the law of pressure that can be verified by the given figure.1

e)If the power of lens is + 4 D, find its focal length.1

f)Draw a ray diagram of the image formed by the lens having focal length 2.5 cm and the object is kept at 6 cm away.1

g)What is meant by 'the frequency of alternating current in our country is 50 Hz'?1

h)In the given graph of future of the universe, what type of universe does 'B' represent?1

i)Write balanced chemical equation when dust formed by burning magnesium ribbon is added to water.1