The acceleration due to gravity at the equator:

• is less than that at the poles
• is greater than that at the poles
• is equal to that at the poles
• does not depend on the earth's centripetal acceleration
Correct Option: A  [ is less than that at the poles ]

Remark:

What is the rarest element on earth?

• Radium
• Einsteinium
• Astatine
• none of these
Correct Option: C  [ Astatine ]

Remark: Astatine is a very rare radioactive chemical element with the chemical symbol At and atomic number 85

Red data book contains data of which of the following?

• All plant species
• All animal species
• All endangered species
• All extinct species
Correct Option: C  [ All endangered species ]

Remark:

Which of the following branch deals with the various principles that govern the relationship between organisms and their environment?

• Histology
• Ecology
• Entomology
• Anthropology
Correct Option: B  [ Ecology ]

Remark:

Which of the following blood group is considered as Universal Donor ?

• A
• AB
• B
• O
Correct Option: D  [ O ]

Remark:

The gastric gland in the stomach produce an enzyme :

• Insulin
• Ptyalin
• Pepsin
• Trypsin
Correct Option: C  [ Pepsin ]

Remark:

Which one of the following is a chemical change ?

• Burning of candle
• Melting of wax
• Vapourisation of water
• Magnetising of Iron
Correct Option: A  [ Burning of candle ]

Remark:

The Law of Segregation and The Law of Independent Assortment were discovered by

• Johann Gregor Mendel
• Thomas Hunt Morgan
• Govindjee
• M. D. Hatch
Correct Option: A  [ Johann Gregor Mendel ]

Remark:

A vitamin requires cobalt for its activity. The vitamin is:

• Vitamin B₁₂
• vitamin D
• vitamin B₂
• Vitamin A
Correct Option: A  [ Vitamin B₁₂ ]

Remark:

What is reason for using red light as a stop signal ?

• Long wavelength
• Short wavelength
• Chromogenic effect
• Infra Red
Correct Option: A  [ Long wavelength ]

Remark: