Intestinal bacteria synthesizes which vitamin in the human body?

• Vitamin A
• Vitamin C
• Vitamin D
• Vitamin K
Correct Option: D  [ Vitamin K ]

Remark:

Noise levels in residential areas should not exceed:

• 30 decibels
• 100 decibels
• 85 decibels
• 55 decibels
Correct Option: D  [ 55 decibels ]

Remark:

Which among the following is respiratory pigment in human beings?

• Melanin
• Haemoglobin
• Rhodopsin
• Bilirubin
Correct Option: B  [ Haemoglobin ]

Remark:

The location of where an organism lives would be best described as its:

• niche
• habitat
• range
• biome
Correct Option: B  [ habitat ]

Remark:

The exit of food from the stomach is regulated by which muscle

• cardiac
• sphincter
• skeletal
• None of these
Correct Option: B  [ sphincter ]

Remark:

Which of the following is the best conductor of heat ?

• mercury
• silver
• leather
• benzene
Correct Option: B  [ silver ]

Remark:

Iron deficiency in Blood is referred as

• Goitre
• Anaemia
• Osteoporosis
• Kwashiorko
Correct Option: B  [ Anaemia ]

Remark:

The HIV virus affects the:

• Leucocytes
• Lymphocytes
• Erythrocytes
• None of these
Correct Option: B  [ Lymphocytes ]

Remark:

Organic farming does not include:

• green manures
• chemical fertilizers
• crop rotation
• compost and farmyard manures
Correct Option: B  [ chemical fertilizers ]

Remark:

Consider the following diseases:

i)Cholera
ii)Tuberculosis
iii)Small pox
iv)Typhoid

Which of the above diseases are caused by bacteria ?

• (i) and (iii) only
• (ii) and (iv) only
• (i), (iii) and (iv)
• (i), (ii) and (iv)
Correct Option: D  [ (i), (ii) and (iv) ]

Remark: