The function of ball bearing in a wheel is:

• to increase friction
• to convert kinetic friction into rolling friction
• to convert static friction into kinetic friction
• just for convenience
Correct Option: B  [ to convert kinetic friction into rolling friction ]

Remark:

Malaria is caused by

• parasitic infection
• viral infection
• bacterial infection
• fungal infection
Correct Option: A  [ parasitic infection ]

Remark:

Chemical name of 'Baking powder' is :

• Ammonium Chloride
• Magnesium Phosphate
• Sodium bi-carbonate
• Ammonium bi-phosphate
Correct Option: C  [ Sodium bi-carbonate ]

Remark:

The phenomenon involved in propagation of light waves throuhg optical fibres is :

• Dispersion of light
• Scattering of light
• Total internal reflection of light
• Refraction of light
Correct Option: C  [ Total internal reflection of light ]

Remark:

Which of the following is used to express the speed of internet connectivity ?

• Mb / sec
• Mb
• Herz
• Kb
Correct Option: A  [ Mb / sec ]

Remark:

Which of the following contains maximum carbon dioxide ?

• Grasslands
• Forests
• Oceans
• Agroecosystems
Correct Option: C  [ Oceans ]

Remark:

Which of the following computer language is used for artificial intelligence?

• FORTRAN
• COBOL
• INDEXING
• PROLOG
Correct Option: D  [ PROLOG ]

Remark:

Acupuncture is a medical system of treatment in which:

• herbs are used to relieve pain
• needles are inserted into particular parts of the body to relieve pain
• surgery is done to relieve pain
• none of these
Correct Option: B  [ needles are inserted into particular parts of the body to relieve pain ]

Remark:

The purest form of iron is

• White cast iron
• Grey cast iron
• Wrought iron
• Steel
Correct Option: C  [ Wrought iron ]

Remark:

Fathom is unit of:

• Depth
• Distance
• Frequency
• Sound
Correct Option: A  [ Depth ]

Remark: