The animal group that is not found in marine water:

• Mammals
• Amphibia
• Reptiles
• Aves
Correct Option: D  [ Aves ]

Remark:

The number of milk teeth in man is

• 28
• 29
• 20
• 12
Correct Option: C  [ 20 ]

Remark:

What is the scientific name of vitamin A

• Retinol
• Riboflavin
• Ascorbic acid
• Calciferol
Correct Option: A  [ Retinol ]

Remark: Vitamin A is a fat-soluble vitamin that is essential for various biological processes, including vision, immune system function, and skin health.

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

• acidic
• neutral
• alkaline
• None of the above
Correct Option: C  [ alkaline ]

Remark:

Which of the following minerals is found in Monazite sand ?

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

Remark:

Thorium and Beryllium are

• Metallic minerals
• Earth material
• Atomic minerals
• Precious metals
Correct Option: C  [ Atomic minerals ]

Remark: Atomic minerals include mainly minerals containing uranium, thorium, rare metals, viz. niobium, tantalum, lithium, beryllium, titanium, zirconium, and rare earth elements (REEs) containing uranium and thorium as well as beach sand minerals.

Which of the following is not a renewable source of energy ?

• Natural gas
• Geothermal energy
• Flowing water
• Biomass
Correct Option: A  [ Natural gas ]

Remark:

Sound-waves from a loud speaker is caused by:

• frequency
• vibrations
• pitch
• amplitude
Correct Option: B  [ vibrations ]

Remark:

What is the other name for Vitamin B₂ ?

• Haemoglobin
• Dextrose
• Thiamine
• Riboflavin
Correct Option: D  [ Riboflavin ]

Remark:

Sodium stearate is a salt and is used?

• in gunpowder
• in Paint
• to make Soap
• to make fertilizer
Correct Option: C  [ to make Soap ]

Remark: