a)How many bits are there in 1 byte?1

b)Which one of the following is a plant that bears flower, has fibrous root and no branches?1

c)Which order is right in terms of evolution?1

d)Volcanic eruption (A) and over use of fossil fuel (B) are two causes of climate change. Which of the following alternative is correct about these?1

e)If the radius of the Earth is halved keeping the mass constant, how will the value of acceleration due to gravity 'g' change?1

f)In the adjoining figure, how much weight can be balanced on Piston B?1

g)Which situation will be correct when ray of light enters glass from air and emerges in the air? [Note: i = angle of incidence, r = angle of refraction and e = emergent angle]1

h)Due to which force masses on the universe remains in their position?1

i)Which type of chemical reaction is given below? Zn + HCl → ZnCl₂ + H₂1

j)Fruit sellers use a certain white powder to ripen fruits. What could be the name of this chemical?1

a)Write a difference between fundamental unit and derived unit.1

b)Name the force applied by water in upward direction to the body immersed in it.1

c)Why does a ray of light bends towards normal while refracting from air to glass?1

d)To which phenomenon of light is the given figure related?1

e)Give one reason why wire vibrates when current/electricity is passed through the coil of the wire.1

f)Write one condition necessary for a closed universe.1

g)Define ore.1

h)Which concentration method is applied during the purification of iron from its ore?1

i)Why are hydrocarbons called organic compounds?1