Environmental Studies Worksheet-7
A. By not using them B. By polluting them
C. By using them D. By cleaning them
A. Thousands to ten thousands seconds old
B. Thousands to billions years old
C. A couple of years old
D. A few days old
A. Wood, iron B. Iron, wood
C. Glass, iron D. Cement, wood
A. Buffalo B. Cow C. Leopard D. Horse
A. Burning of wood B. Respiration
C. Flying of aeroplane D. All of these
A. Room produces perfume when a perfume stick is lit in a corner
B. All the air present in a room gives perfume
C. Perfumes do not spread from one place to another
D. All gases, including perfumes, have the property of spreading from one place to another
In which of the container will water evaporate the fastest?
A. 1 B. 2 C. 3 D. 4
A. Air India B. Indian Airlines
C. International India D. Both (A) & (B).
A. Radiation, evaporation B. Evaporation, condensation
C. Melting, boiling D. Boiling, freezing
A. Filtering through clean cloth
B. Filtering through strainer
C. Filtering through filter paper
D. None of these.
Answer Key:
(1)–B; (2)–B; (3)–A; (4)–C; (5)–D; (6)–D; (7)–D; (8)–A; (9)–B; (10)–C