Who invented insulin?

• Jonas E. Salk
• Alexander Fleming
• F. Banting
• Roentgen
Correct Option: C  [ F. Banting ]

Remark:

The brain of any computer system is:

• Control Unit
• Monitor
• CPU
• ALU
Correct Option: C  [ CPU ]

Remark:

The addition of gypsum to Portland cement helps in:

• increasing the strength of cement
• rapid setting of cement
• preventing rapid setting of cement
• reducing in the cost of cement
Correct Option: C  [ preventing rapid setting of cement ]

Remark:

Which of the following lenses would you prefer to read small letters in a dictionary ?

• A convex lens of focal length 50 cm
• A concave lens of focal length 50 cm
• A convex lens of focal length 5 cm
• A concave lens of focal length 5 cm
Correct Option: C  [ A convex lens of focal length 5 cm ]

Remark:

Which of the following branch deals with the various principles that govern the relationship between organisms and their environment?

• Histology
• Ecology
• Entomology
• Anthropology
Correct Option: B  [ Ecology ]

Remark:

What changes will happen to a ball of ice and water kept at exactly zero degree Celsius?

• All ice will melt
• All water will become ice
• No change will happen
• Only some ice will melt
Correct Option: C  [ No change will happen ]

Remark:

The technique of 'DNA sequencing' was discovered by:

• H. G. Khorana
• Watson and Crick
• Frederick Sanger
• E. M. Southern
Correct Option: B  [ Watson and Crick ]

Remark:

Which of the following statements is correct ?

• Red insulated wire is called 'live' wire
• Black insulated wire is called 'neutral' wire
• Green insulated wire is called 'earthing'
• All of the above
Correct Option: D  [ All of the above ]

Remark:

Rainbow is formed due to a combination of:

• refraction and absorption
• dispersion and diffraction
• refraction and scattering
• dispersion and total internal re?ection
Correct Option: D  [ dispersion and total internal re?ection ]

Remark:

Growth hormone is produced by :

• Bones
• Pituitary gland
• Thyroid gland
• Adrenal gland
Correct Option: B  [ Pituitary gland ]

Remark: