If a sample of soil is found to have a pH value of 8.25, it is:

• acidic
• neutral
• alkaline
• None of the above

Olive ridley is related to:

• turtle
• cease fire violations
• terrorist killings
• migratory bird

dolomite is used in which field?

• Soil conditioner
• Pasteurization
• Dynamite
• Synthetic rubber

Vinegar is chemically a:

• diluted citric acid
• diluted acetic acid
• diluted hydrochloric acid
• diluted oxalic aid

ISRO was establish in which year?

• 1976
• 1966
• 1969
• 1970

Who had discovered oxygen?

• Rutherford
• William Harvey
• Priestly
• Galileo

Which one of the following gases, present in the air near the surface of the Earth, has maximum concentrations?

• Oxygen
• Hydrogen
• Nitrogen
• Methane

A concave lens always forms an image which is:

• Real and erect
• Virtual and erect
• Real and inverted
• Virtual and inverted

Red light is used in traffic signals because:

• It has the longest wavelength
• It is beautiful
• It is visible to people even with bad eyesight
• None of these

Monitor of a computer is:

• Input device
• Output device
• Input/Output device
• None of these