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Free Download as PDF of the detailed solutions for class 12 Biology from NCERT or CBSE text book as per exam pattern, to help you in day to day learning. We provide all important questions and answers from chapter Health and Diseases of Biology.
136
Incubation period of typhoid is
[1]
7 – 17 days
[2]
5 – 10 days
[3]
1 – 5 days
[4]
3 – 4 days
137
Metastasis is connected with
[1]
Benign tumour
[2]
Malignant tumour
[3]
Both 1 and 2
[4]
Crown gall tumour
138
HIV infects
[1]
Cytotoxic T-cells
[2]
Cells of nervous system
[3]
B-lymphocytes
[4]
Helper T-cells
139
Western blot test is used for confirmation of
[1]
Typhoid
[2]
HIV
[3]
Cancer
[4]
Malaria
140
A bacterial disease is
[1]
Leprosy
[2]
Polio
[3]
Chicken pox
[4]
Influenza
141
Treatment of cancer is carried out by
[1]
Radiation therapy
[2]
Surgery
[3]
Immunotherapy
[4]
All of the above
142
Pneumonia that infects lung alveoli is caused by
[1]
Streptococcus species
[2]
Plasmodium species
[3]
Salmonella
[4]
Haemophilus
Answer: Streptococcus species
143
Ringworm in humans is caused by
[1]
Fungi
[2]
Nematodes
[3]
Viruses
[4]
Bacteria
144
Widal test is based on
[1]
Serological interaction
[2]
Sonography
[3]
Endoscopy
[4]
Angiography
Answer: Serological interaction
145
Most common type of Salmonella found in India is
[1]
S. arizonae
[2]
S. enteritidis
[3]
S. typhi
[4]
S. typhimurium
146
Kwashiorkor, a disorder of children is due to
[1]
Protein/essential amino acid deficiency
[2]
Carbohydrate deficiency
[3]
Genetic problem
[4]
Vitamin deficiency
Answer: Protein/essential amino acid deficiency
147
Diseases of the heart, joints and nervous system are called
[1]
communicable diseases.
[2]
degenerative diseases
[3]
deficiency diseases
[4]
allergies
Answer: degenerative diseases
148
Frost bite is caused by
[1]
chemical agent
[2]
biological agent
[3]
nutrient agent
[4]
physical agent
149
Smoking may cause cancer of
[1]
Lung
[2]
Liver
[3]
Skin
[4]
Cervix
150
Malaria is caused by _____.
[1]
Ascaris
[2]
Plasmodium
[3]
Entamoeba
[4]
Trypanosoma
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