Which of the following is/are function(s...

Which of the following is/are function(s) of the veins of leaf ?

Veins provide rigidity to the leaf blade

Veins act as cannels of transport for water and minerals

Veins acts as channels of transport for food materials

All of the above

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The correct Answer is:

Vein provides rigidity to the leaf blade, acts as channels of transport for water, minerals and food materials.

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Which of the following is/are state function(s)?

Internal energy (U)

Volume (V)

Heat (q)

Enthalpy (H)

Which of the following is/are function(s) of salt-bridge?

it completes the electrical circuit with electrons flowing from one electrode to the other through external wires ad a flow of ions betwee the two compartments through salt-bridge.

it minimises the liquid-liquid junction potential

both correct

none of these

Which of the following is /are functions (s) of salt bridge ?

It completes the electrical circuit with electrons flowing from one electrode to the other through external wires and a flow of ions between the two compartments through salt bridge .

It prevents the accumulation of ions .

Either (A) or (B) .

Neither (A) nor (B) .