Copper rod and zinc sheet
Copper sheet and zinc sheet
Carbon steel and zinc alloy
Copper rod and zinc hammer
Answer- Carbon rods and zinc rods
Educational Website
Copper rod and zinc sheet
Copper sheet and zinc sheet
Carbon steel and zinc alloy
Copper rod and zinc hammer
Answer- Carbon rods and zinc rods
The wastage of electricity is reduced
The required voltage is maintained despite the drop in the path
More current is available
The voltage can be reduced as required
Answer-The wastage of electricity is reduced
For the force of gravity
For the force of gravity
We are to stand still
For our rotation with the Earth
Answer-For the force of gravity
Petroleum
coal
natural gas
Biogas
Answer-Biogas
They have many vents in their roots
Their stems are lighter than the leaves
They have many air holes in their trunks
None of them
Answer-They have many vents in their trunks
sun rays
Peat coal
Gasoline
natural gas
Answer-sun rays
Cooking requires not only heat but also pressure
The boiling point of a liquid increases at higher pressures
The stored steam heat helps in faster cooking
Heat is stored in closed containers
Answer-Boiling point of liquid increases at high pressure
Copper and tin
Copper and zinc
Copper and nickel
Copper and lead
Answer-Copper and zinc
guava
banana
papaya
Jamrul
Answer-Banana
Oxygen and glucose
Oxygen and blood nutrients
Urea and Glucose
Amino acids and carbon dioxide
Answer-Oxygen and Glucose