(a) Local Self Government
(b) Directive Principles
(c) Fundamental Rights
(d) Preamble
Answer:
Catalytic converter in vehicle is used for controlling
(a) Soil pollution
(b) Radioactive pollution
(c) Air pollution
(d) Water pollution
Answer:
Common indicator organism of water pollution is
(a) Endameba histolytica
(b) Salmonella typhi
(c) Eschjerichia coli
(d) Cholera vibrio
Answer:
BOD is conncted with
(a) Organic matter
(b) Microbes
(c) Microbes and Organic matter
(d) None of these
Answer:
All the energy in a food chain originates from
(a) The ocean
(b) The Sun
(c) Plants
(d) The farmer
Answer:
The air pollutant not obtained by combustion is
(a) Ammonia
(b) Sulphur dioxide
(c) Carbon dioxid
(d) Nitrogn dioxide
Answer:
The metallurgical process in which a metal is obtained in a used state is called
(a) Calcination
(b) Froth flotation
(c) Smelting
(d) Roasting
Answer:
The method of concentrating the ore which makes use of the difference in density between ore and impurities is called
(a) Magnetic separation
(b) Levigation
(c) Leaching
(d) Liquaation
Answer:
The material which can be deformed permanently by heat and pressure is called as
(a) Chemical compound
(b) Polymer
(c) Thermoplastic
(d) Thermoset
Answer:
Proteins are denatured in
(a) Large intestine
(b) Small intestine
(c) Mouth
(d) Stomach
Answer: