Q. 81. Which element reacts with slaked lime to produce bleaching powder?
(A) Bromine
(B) Chlorine
(C) Fluorine
(D) Iodine
Answer:
Explanation:
Q. 82. Which statement about viruses is incorrect?
(A) Genetic material of viruses is infectious
(B) No virus contains both RNA and DNA
(C) Viruses can grow outside host cells
(D) Viruses cause diseases like herpes and influenza
Answer:
Explanation:
Q. 83. Octopus belongs to which phylum?
(A) Annelida
(B) Arthropoda
(C) Echinodermata
(D) Mollusca
Answer:
Explanation:
Q. 84. Which characteristic does NOT apply to class Amphibia?
(A) Amphibians are warm-blooded
(B) Amphibian skin is moist
(C) Heart has three chambers
(D) Respiration via gills, lungs, and skin
Answer:
Explanation:
Q. 85. Which statement about mango fruit is false?
(A) Epicarp, mesocarp, and endocarp form the pericarp
(B) Fleshy part develops from the thalamus
(C) Fruit develops from a superior, monocarpellary ovary
(D) It is a drupe
Answer:
Explanation: