Viruses, which cause hepatitis, are transmitted through
(a) air
(b) water
(c) food
(d) personal contact
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Which among the following diseases is not sexually transmitted?
(c) HIV - AIDS
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How are viroids different from viruses?
Viroids were discovered in 1917 by T.O. Denier. They cause potato spindle tuber disease. They are smaller in size than viruses. They also lack the protein coat and contain free...
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Give a brief account of viruses with respect to their structure and nature of genetic material. Also name four common viral diseases.
Viruses are sub-microscopic infectious agents that can infect all living organisms. A virus consists of genetic material surrounded by a protein coat. The genetic material may be present in the...
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Which one of the following disease is not transmitted by mosquito?
disease is not transmitted by mosquito (c) Typhoid
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Which disease is not transmitted by mosquitoes?
disease is not transmitted by mosquitoes (d) Pneumonia
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Name any three diseases transmitted through vectors.
Malaria, Dengue and Kala-azar
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Water flows through two identical tubes A and B. A volume V_o of water passes through the tube A and 2 V_o through B in a given time.
(a) Flow in both the tubes are steady. (b) Flow in both the tubes are turbulent. (c) Flow is steady in A but turbulent in B. EXPLANATION: Since double the volume passes in B at the same time,...
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When an unpolarized light of intensity I_0 is incident on a polarizing sheet, the intensity of the light which does not get transmitted is
The correct answer is (1) When unpolarised light of intensity Io is incident on a polarizing sheet, only Io/2 is transmitted.
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Water flows through two identical tubes A and B. A volume V0 of water passes through the tube A and 2V0 through B in a given time,
(a) Flow in both the tubes are steady. (b) Flow in both the tubes are turbulent. (c) Flow is steady in A but turbulent in B. EXPLANATION: Since double the volume passes in B at...
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From the sexually transmitted diseases mentioned below, identify the one which does not specifically affect the sex organs:
b. identify the one which does not specifically affect the sex organs AIDS.
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