Practice Questions

TLS Online TPP Program

#Question id: 11403

Several categories of risk of species extinction have been defined. A species can be determined as critical endangered if there is considered to be

#XL - R Botany

10% probability of extinction within 100 years
If the probability of extinction is 20% within 20 years or 10 generations
If within 10 years or three generations the risk of extinction is at least 50 %
If the probability is 50% of extinction within 50 generation or 100 years

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TLS Online TPP Program

#Question id: 20036

#XL - P Chemistry

The energy required to dislodge electron from excited isolated H atom (IE1 = 13.6eV) is

TLS Online TPP Program

#Question id: 20037

#XL - P Chemistry

Velocity of electron in the first orbit of H-atom is compared to that of velocity of light is approximately

TLS Online TPP Program

#Question id: 20038

#XL - P Chemistry

How many electrons in Cu atom have (n + ) = 4

TLS Online TPP Program

#Question id: 20039

#XL - P Chemistry

In any subshell the maximum number of electrons having same value of spin quantum number is

TLS Online TPP Program

#Question id: 20040

#XL - P Chemistry

For a certain particle, it is found that uncertainty 1840 in velocity is reciprocal of uncertainty in position This implies that

TLS Online TPP Program

#Question id: 20041

#XL - P Chemistry

How many electrons in K (Z=19) have n=4 and