List of practice Questions

Chamber A and B are separated by a semi-permeable membrane. Study the given figure and choose the right option.

I.$\quad$ In Rhodophyceae, food is stored in the form of mannitol and$\quad$$\quad$ $\quad$$\quad$laminarin. II. $\quad$The ovules of Gymnosperms are not enclosed by ovary wall. III. $\quad$Salvinia is heterosporous. IV.$\quad$In the diplontic life-cycle, the free living gametophyte represents $\quad$$\quad$the dominant phase. Of the above statements

Which of the following taxonomic category of housefly is wrongly matched?

Cerebrospinal fluid is present

Blue-baby syndrome is caused by

Cri-du-Chat (cry of the cat) syndrome occurs in human babies due to

Bioreactors are useful in

The vant Hoff factor of $ BaC{{l}_{2}} $ at $ 0.01 \,M $ concentration is $ 1.98 $ . The percentage of dissociation of $ BaC{{l}_{2}} $ at this concentration is:

Two moles of $ PC{{l}_{5}} $ is heated in a closed vessel of $ 2L $ capacity. When the equilibrium is attained 40% of it has been found to be dissociated. What is the $ {{K}_{c}} $ in $ mol/d{{m}^{3}} $ ?

Audio signal cannot be transmitted because

Barnacles growing on the back of whale is an example for

In which of the following molecules the central atom does not follow the octet rule ?

Human chorionic gonadotropin is secreted by

The hormone which regulates sleep-wake cycle in man is

The respiratory rhythm centre is present in the

During meiosis I, the bivalent chromosomes clearly appear as tetrads during

In the diagram of types of placentation given above 'a', 'b', 'c? and ?d? respectively represent:

Which of the following is not purpose of transpiration ?

The basis of DNA finger-printing is

Arsenic containing medicine used for the treatment of syphilis, is

The monocotyledonous seed contains one large and shield shaped cotyledon known as

An orchid growing as an epiphyte on a mango tree is an example for

An oval depression called fossa is seen on

Match the items in column I with column II and choose the correct answer.

Choose the correct combinations