Practice Questions

TLS Online TPP Program

#Question id: 34079

Which of the following are advantages of the spread plate method?

#XL - S Microbiology

It allows for the enumeration of viable microorganisms in a sample.
It is suitable for quantifying microbial populations.
It requires the use of molten agar.
It provides a surface for colony growth, facilitating isolation.

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TLS Online TPP Program

#Question id: 20041

#XL - P Chemistry

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

TLS Online TPP Program

#Question id: 20042

#XL - P Chemistry

Suggest two transitions in hydrogen spectrum for which wave number ratio is 108:7

TLS Online TPP Program

#Question id: 20045

#XL - P Chemistry

The ratio of K.E. to P.E. of an electron in Bohr orbit of H like species is

TLS Online TPP Program

#Question id: 20046

#XL - P Chemistry

For particles having same KE., the de-broglie wavelength is

TLS Online TPP Program

#Question id: 20047

#XL - P Chemistry

In one joule of energy, the number of photon with wave number equal to is

TLS Online TPP Program

#Question id: 20048

#XL - P Chemistry

Which of the expression given below gives IE of H atoms in terms of Rydberg’s constant (RH)?