1.

Taxonomic hierarchy refers to

• stepwise arrangement of all tegories for classification of plants and animal
• a group of senior taxonomists who decide the nomenclature of plants and animals
• a list of botanists or zoologists who have worked on taxonomy of a species or group
• classification of a species based on fossil record

2.

Most stable carbocation is

3.

What is the shape and magnetic nature of permanganate ion ?

• Pyramidal diamagnetic
• Tetrahedral, diamagnetic
• Tetrahedral, paramagnetic
• Planar, paramagnetic

4.

How many $ 1\,\mu F $ capacitors must be connected in parallel to store a charge of $1\, C$ with a potential of $110\, V$ across the capacitors?

• 990
• 900
• 9090
• 909

5.

During the phenomenon of resonance

• the amplitude of oscillation becomes large
• the frequency of oscillation becomes large
• the time period of oscillation becomes large
• All of the above

6.

Which of the following statements is wrong?

• Pollen grains remain viable for several months because their outer covering is made of sporopollenin
• No enzyme can degrade sporopollenin
• Pollen grains are well represented in fossil strata due to sporopollenin
• Pollen wall has cavities containing proteins