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NCERT - Health and Diseases Questions and Answers of Class 12 Biology | GkSeries

Questions
136 Incubation period of typhoid is
1 7 – 17 days
2 5 – 10 days
3 1 – 5 days
4 3 – 4 days

Answer: 7 – 17 days
137 Metastasis is connected with
1 Benign tumour
2 Malignant tumour
3 Both 1 and 2
4 Crown gall tumour

Answer: Malignant tumour
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138 HIV infects
1 Cytotoxic T-cells
2 Cells of nervous system
3 B-lymphocytes
4 Helper T-cells

Answer: Helper T-cells
139 Western blot test is used for confirmation of
1 Typhoid
2 HIV
3 Cancer
4 Malaria

Answer: HIV
140 A bacterial disease is
1 Leprosy
2 Polio
3 Chicken pox
4 Influenza

Answer: Leprosy
141 Treatment of cancer is carried out by
1 Radiation therapy
2 Surgery
3 Immunotherapy
4 All of the above

Answer: 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

Answer: Fungi
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

Answer: S. typhi
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

Answer: physical agent
149 Smoking may cause cancer of
1 Lung
2 Liver
3 Skin
4 Cervix

Answer: Lung
150 Malaria is caused by _____.
1 Ascaris
2 Plasmodium
3 Entamoeba
4 Trypanosoma

Answer: Plasmodium
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