What is the dimensions of A4 size paper?

• 210 mm X 297 mm
• 217 mm X 290 mm
• 200 mm X 300 mm
• none of these
Correct Option: A  [ A4 measures 210mm x 297mm or 8.27inches x 11.69inches ]

Remark: Legal- 21.59mm X 35.56mm

Which of the following is not a property of acids ?

• All acids have sour taste
• All acids are corrosive in nature
• For acidic solutions pH = <7
• Acids tum red litmus to blue
Correct Option: D  [ Acids tum red litmus to blue ]

Remark:

Tetraethyl lead (TEL) is

• a catalyst used in burning fossil fuel
• an antioxidant
• a reductant
• an antiknock compound
Correct Option: D  [ an antiknock compound ]

Remark:

Sound causes hazardous noise pollution at decibels:

• Above 50
• Above 80
• Above 100
• Above 130
Correct Option: B  [ Above 80 ]

Remark:

Curie point is the temperature at which:

• matter becomes radioactive
• a metal loses magnetic properties
• a metal loses conductivity
• transmutation of metal occurs
Correct Option: B  [ a metal loses magnetic properties ]

Remark:

'Shock –absorbers' are usually made of steel as it:

• is not brittle
• has lower elasticity
• has higher elasticity
• has no ductile property
Correct Option: C  [ has higher elasticity ]

Remark:

What is condensation?

• Change of Solid into liquid
• Change of vapour into liquid
• Change of Liquid into Gas
• None of these
Correct Option: B  [ Change of vapour into liquid ]

Remark:

Dialysis is prescribed for patients having:

• Liver disease
• Lung trouble
• Kidney trouble
• Heart Disease
Correct Option: C  [ Kidney trouble ]

Remark:

Study of, and the selection, planting, care, and removal of individual trees, shrubs, vines, and other perennial woody plants is known as

• Olericulture
• Floriculture
• Arboriculture
• Viticulture
Correct Option: C  [ Arboriculture ]

Remark: Arboriculture is the art of cultivating, properly managing, and studying individual shrubs, trees, vines, and any other woody plants.

Which of the following contains maximum carbon dioxide ?

• Grasslands
• Forests
• Oceans
• Agroecosystems
Correct Option: C  [ Oceans ]

Remark: