Practice Questions

TLS Online TPP Program

#Question id: 2121

Which of the following membrane activities requires energy from ATP hydrolysis?

#XL - T Zoology

facilitated diffusion of chloride ions across the membrane through a chloride channel
movement of Na+ ions from a lower concentration in a mammalian cell to a higher concentration in the extracellular fluid
movement of glucose molecules into a bacterial cell from a medium containing a higher concentration of glucose than inside the cell
movement of carbon dioxide out of a paramecium

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TLS Online TPP Program

#Question id: 20158

#XL - P Chemistry

In a set of degenerate orbitals the electrons distribute themselves to retain similar spins as far as possible. This statement is attributed to

TLS Online TPP Program

#Question id: 20159

#XL - P Chemistry

The ground state configuration of Fe³⁺ ion in gaseous state is: (At. No. of Fe = 26)

TLS Online TPP Program

#Question id: 20160

#XL - P Chemistry

If uncertainty in the position of electron is zero, the uncertainty in its momentum would be

TLS Online TPP Program

#Question id: 20161

#XL - P Chemistry

The radius of second Bohr’s orbit is

TLS Online TPP Program

#Question id: 20162

#XL - P Chemistry

For which of the following sets of quantum -numbers an electron will have the highest energy ?

TLS Online TPP Program

#Question id: 20163

#XL - P Chemistry

The uncertainty in the position of an electron (mass 9.1 × 10^–28 g) moving with a velocity of 3.0 x 104 cms^–1 accurate up to 0.011% will be