Practice Questions

TLS Online TPP Program

#Question id: 11371

Which statement about gram-negative bacteria is correct?

#XL - S Microbiology

Penicillins are the best antibiotics to use against them.
They often possess an outer membrane containing toxic lipopolysaccharides.
Their chromosomes are composed of DNA tightly wrapped around large amounts of histone proteins.
Their cell walls are primarily composed of peptidoglycan

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TLS Online TPP Program

#Question id: 19569

#XL - P Chemistry

Which of the following molecular hydrides acts as a Lewis acid?

TLS Online TPP Program

#Question id: 19570

#XL - P Chemistry

The basic structural unit of silicates is:

TLS Online TPP Program

#Question id: 19571

#XL - P Chemistry

The increasing order of atomic radii of the following group 13 elements are:

TLS Online TPP Program

#Question id: 19572

#XL - P Chemistry

What is created by the reaction of natural gas and steam in the Haber-Bosch process?

TLS Online TPP Program

#Question id: 19573

#XL - P Chemistry

What form does nitrogen take in plants?

TLS Online TPP Program

#Question id: 19574

#XL - P Chemistry

What happens to the size of atoms in p-block elements when we move from left to right in the same period?