Through the fused sodium chloride, electric current can pass out due to the presence of:

• Free electron
• Free ion
• Free molecule
• None of these
Correct Option: B  [ Free ion ]

Remark:

Magnetic effect of current gives rise to which force ?

• mechanical
• frictional
• spring
• gravitational
Correct Option: A  [ mechanical ]

Remark:

Which is the largest part of the human brain ?

• Medulla Oblongata
• Cerebellum
• Cerebellum
• none of them
Correct Option: C  [ Cerebellum ]

Remark:

"Zoonosis" refers to any disease or infection that is naturally transmissible from:
(i) human to human
(ii) animal to human
(iii) animal to animals
(iv) bird to animal
Select the correct answer using the codes given below.

• Only (i) and (iii)
• Both (i) and (ii)
• Both (iii) and (iv)
• Only (ii)
Correct Option: D  [ Only (ii) ]

Remark: A zoonosis is an infectious disease that has jumped from a non-human animal to humans.

Most plants absorb nitrogen in the form of:

• proteins
• nitrates and nitrites
• urea
• nitrates, nitrites and urea
Correct Option: D  [ nitrates, nitrites and urea ]

Remark:

Heat transfer horizontally within the atmosphere is called:

• conduction
• convection
• absorption
• advection
Correct Option: D  [ advection ]

Remark:

Which among the following is respiratory pigment in human beings?

• Melanin
• Haemoglobin
• Rhodopsin
• Bilirubin
Correct Option: B  [ Haemoglobin ]

Remark:

Who invented the contact lens?

• Enrico Fermi
• Adolf Gaston Eugen Fick
• Sandford Fleming
• Benoit Fourneyron
Correct Option: B  [ Adolf Gaston Eugen Fick ]

Remark:

Which amongst the following is the largest endocrine gland in the body?

• Thyroid
• Parathyroid
• Adrenal
• Pituitary
Correct Option: A  [ Thyroid ]

Remark:

Which of the following is an aquatic fern?

• Adiantum
• Dryopteris
• Salvinia
• Equisetum
Correct Option: C  [ Salvinia ]

Remark: Salvinia, a genus in the family Salviniaceae, is a floating aquatics with creeping stems, branched, bearing hairs on the leaf surface papillae but no true roots, named in honor of Anton Maria Salvini, Italian scientist.