II.ANSWER THE FOLLOWING IN ONE WORD: (10×1=10)
16)Which is the first step used before growing of crops?
17)Which metal is used for wrapping food?
18)Name the unit in which the calorific value of a fuel is expressed?
19)How many number of nuclei is present in a zygote?
20)Voice of which of the following is likely to have a minimum frequency?
21)Name the process of depositing a layer of any desired metal on another material by means of
electricity?
22)List any two states in India where earthquakes are more likely to strike?
23)Name the type of mirror used as a back view mirror?
24)In which part of the sky can you find venus if it is visible as an evening star?
25)The increase in concentration of which gas is not responsible for Global warming?
Answers
ANSWERS
16.The first step used before growing of crops is preparation of soil.
17. Aluminium is the metal that is used for wrapping food.
18.Calorific value of a fuel is expressed in Kilo-joules per kilogram (kJ/kg).
19.The number of nuclei present in a zygote is one .
20. Voice with lower pitch have a minimum frequency.
21.The process of depositing a layer of any desired metal on another material by means of electricity is called electroplating.
22.In India two states where earthquakes are more likely to strike are Jammu & Kasmir and Assam.
23.Convex mirrors are the type of mirror used as a back view mirror.
24.In evening venus can be seen if visible in the western part of the sky.
25. The increase in all other gases excluding water vapor (H₂O), carbon dioxide (CO₂), methane (CH₄), nitrous oxide (N₂O), and ozone (O₃) is not responsible for Global warming .