Which of the following copper alloys is used for the manufacture of springs and suspension filaments in electrical instruments?

• Bronze
• Aluminium bronze
• German silver
• Phosphor bronze
Correct Option: D  [ Phosphor bronze ]

Remark:

What does 'GM' stand for in GM food?

• Generally modified
• Genetically modified
• Genetically medicated
• None of these
Correct Option: B  [ Genetically modified ]

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:

Acid rain is caused due to the pollution of environment by:

• Carbondioxide and Nitrogen
• Carbon monoxide and Carbondioxide
• Ozone and Methane
• Some oxide of Nitrogen and Sulpher
Correct Option: D  [ Some oxide of Nitrogen and Sulpher ]

Remark: Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air

Magnification produced by a rear view mirror fitted in vehicles:

• is less than the object
• is more than the object
• is equal to the object
• can be more or less than the object depending upon the position of object in front of it.
Correct Option: A  [ is less than the object ]

Remark:

Which kind of Power accounts for the largest share of power generation in India ?

• Hydro-electric
• Solar
• Thermal
• Nuclear
Correct Option: C  [ Thermal ]

Remark:

Glaciers always melt first at the:

• top surface
• sides
• bottom
• middle surface
Correct Option: C  [ bottom ]

Remark:

RADAR is used for

• locating submerged submarines
• receiving signals in a radio receiver
• locating geostationary satellites
• detecting and locating the position of objects such as aeroplane
Correct Option: D  [ detecting and locating the position of objects such as aeroplane ]

Remark:

The disease caused by Asbestos is

• Paralysis
• Dysentery
• Emphysema
• Diarrhea
Correct Option: C  [ Emphysema ]

Remark:

Ocean thermal energy is due to:

• tides in the ocean
• pressure difference at different levels in the ocean
• temperature difference at different levels in the ocean
• energy stored by waves in the ocean
Correct Option: C  [ temperature difference at different levels in the ocean ]

Remark: