Consider the following statements regarding bird flu:
I. Viruses causing bird flu belong to Influenza virus A strain
II. The most pathogenic strain of this virus causing bird flu is H1N1
III. Culling and vaccinating livestock is a short term strategy to prevent flu pandemic.
IV. A human vaccine is available to control the spread of disease in human populations.

Of the above statements, the correct are:

1. I and III only
2. II and IV only
3. I, III and IV only
4. I, II, III and IV

Aside from the irritant fibre of ..................., all carcinogens are thought to be ....................... .
1. arsenic, mutagenic
2. asbestos, virulent
3. asbestos, mutagenic
4. arsenic, virulent

In the RT-PCR test used for diagnosing Covid-19, a higher cycle threshold [Ct] value indicates:
1. a higher viral load in the sample
2. a lower viral load in the sample
3. time after which vaccine needs to be given
4. the effectiveness of the antiviral medicines

Which one of the following depresses brain activity and produces feelings of calmness, relaxation and drowsiness?
1. Valium
2. Morphine
3. Hashish
4. Amphetamines

Which of the following diseases is caused by a protozoan ?
1. Influenza
2. Babesiosis
3. Blastomycosis
4. Syphilis

The type of plague, primarily transmitted by the bite of rat flea, and characterized by infected, enlarged, and painful lymph nodes is called as:
1. Pneumonic plague
2. Bubonic plague
3. Septicemic plague
4. Any of the above three

If you suspect major deficiency of antibodies in a person, to which of the following would you look for confirmatory evidences?
1. Serum albumins
2. Haemocytes
3. Serum globulins
4. Fibrinogin in plasma