SA-node of mammalian heart is known as :

• Autoregulator
• Pace-maker
• Time controller
• Beat regulator
Correct Option: B  [ Pace-maker ]

Remark:

The rusting of the iron is the example of:

• Oxidation
• Reduction
• Polymerisation
• Galvanization
Correct Option: A  [ Oxidation ]

Remark:

Onion is a modified form of

• leaf
• stem
• root
• None of these
Correct Option: B  [ stem ]

Remark:

The edible part of potato is

• Root
• Tuber
• Rhizome
• Corm
Correct Option: B  [ Tuber ]

Remark: Stems get modified into underground structures for storage of food as seen in potato called tuber.

Norman E. Borlaug is associated with

• Green Revolution
• White Revolution
• Pink Revolution
• Blue Revolution
Correct Option: A  [ Green Revolution ]

Remark: Norman E. Borlaug was awarded the Nobel Peace Prize in 1970 in recognition of his contributions to global food production.

Which of the following is the uppermost layer of the atmosphere?

• Stratosphere
• Mesosphere
• Ionosphere
• Exosphere
Correct Option: D  [ Exosphere ]

Remark:

Which of the following is not an element ?

• Oxygen
• Nitrogen
• Hydrogen
• Marble
Correct Option: D  [ Marble ]

Remark:

Which of the following is an operating system ?

• Floppy
• Windows Xp
• Oracle
• ROM
Correct Option: B  [ Windows Xp ]

Remark:

Which of the following is chiefly present in LPG?

• Methane
• Ethane
• Propane
• Butane
Correct Option: D  [ Butane ]

Remark:

Oncology is the study of

• Branch of science that deals with eyes
• Branch of science that deals with Brain
• Branch of science that deals with Tumours and Cancers
• Branch of science that deals with Blood Circulation
Correct Option: C  [ Branch of science that deals with Tumours and Cancers ]

Remark: