Oxygen is transported to the cells of the human body through:

• Red Blood cells
• White Blood cells
• Hormones
• Enzymes
Correct Option: A  [ Red Blood cells ]

Remark:

Which is the respiratory organ of fish?

• Ears
• Gills
• Skin
• Lungs
Correct Option: B  [ Gills ]

Remark:

Which of the following is an anaesthetic gas ?

• Nitrogen dioxide
• Nitrous oxide
• Nitric oxide
• Nitrogen
Correct Option: B  [ Nitrous oxide ]

Remark:

Measles is a disease caused by :

• Bacteria
• Protozoa
• Worm
• Virus
Correct Option: D  [ Virus ]

Remark:

Malaria is caused by

• parasitic infection
• viral infection
• bacterial infection
• fungal infection
Correct Option: A  [ parasitic infection ]

Remark:

Every computer connected to the internet is identified by a unique four-part strings known as:

• IP Address
• Domain name
• Host Address
• None of these
Correct Option: A  [ IP Address ]

Remark:

Cerebral Malaria is caused by:

• Plasmodium vivax
• Plasmodium malariae
• Plasmodium falciparum
• None of the above
Correct Option: C  [ Plasmodium falciparum ]

Remark:

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

• Oxygen
• Hydrogen
• Nitrogen
• Methane
Correct Option: C  [ Nitrogen ]

Remark:

What makes a lemon sour?

• Tartaric acid
• Oxalic acid
• Citric acid
• Hydrochloric acid
Correct Option: C  [ Citric acid ]

Remark: