Which of the following is an operating system ?

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

Remark:

Saliva helps in the digestion of:

• fats
• starch
• proteins
• vitamins
Correct Option: B  [ starch ]

Remark:

Usually OMR sheets are used in most of the competitive examinations. The full form of OMR is :

• Optical Mark Response
• Optical and Magnetic Reader
• Optical and Magnetic Record
• Optical Mark Recognition
Correct Option: D  [ Optical Mark Recognition ]

Remark:

In 1643, an Italian named Evangelista Torricelli invented:

• Thermometer
• Barometer
• Ritcher Scale
• Bar Codes
Correct Option: B  [ Barometer ]

Remark:

Which of the following minerals is found in Monazite sand ?

• potassium
• uranium
• Thorium
• sodium
Correct Option: C  [ Thorium ]

Remark:

Tajmahal is threatened mostly due to :

• Sulphur dioxide
• Carbon dioxide
• Carbon monooxide
• Water Vapour
Correct Option: A  [ Sulphur dioxide ]

Remark:

Red blood corpuscles are formed in:

• Heart
• Bone marrow
• Liver
• Kidney
Correct Option: B  [ Bone marrow ]

Remark:

In which part of the human body carpal bones are found ?

• Wrist
• Femur
• Neck
• None of these
Correct Option: A  [ Wrist ]

Remark:

Which of the following trees shed their leaves once in a year?

• Deciduous trees
• Coniferous trees
• Evergreen trees
• Both deciduous and coniferous trees
Correct Option: A  [ Deciduous trees ]

Remark:

Which type of fire extinguisher is used for petroleum fire?

• Powder type
• Liquid type
• Soda acid type
• Foam type
Correct Option: A  [ Powder type ]

Remark: