CBSE - VII
Question 1
50° C = ____ K.
A) 300
B) 310
C) 323
D) 350
Question 2
Mountaineers suffer from bleeding noses at high altitudes because atmospheric pressure at high altitude is more than the atmospheric pressure at sea level.
A) True
B) False
Question 3
Travelling at an average speed of 50 kmph, a car takes 3 hours to go from Chennai to Pondicherry. The distance between the two places is ____ km.
A) 200
B) 150
C) 100
D) 400
Question 4
A combination of two or more cells connected with each other where the positive terminal of one cell is connected to the positive terminal of another cell is considered to be a battery.
A) True
B) False
Question 5
Ram is observing his image in a plane mirror. If the distance between Ram and the mirror is 4 m, then the distance between his image and the mirror is ____ m.
A) 4
B) 8
C) 2
D) 16
Question 6
The common name given to the soft, curly fibres obtained chiefly from fleece of domesticated sheep is ____.
A) wool
B) cotton
C) silk
D) terry cotton
Question 7
A colourless solution of an alkaline shampoo changes to ____ when phenolphthalein is added to it.
A) red
B) pink
C) blue
D) yellow
Question 8
Magnesium oxide + _____ → Magnesium hydroxide
A) Sulphurous acid
B) Hydrochloric acid
C) Sulphuric acid
D) Water
Question 9
In Bryophyllum, leaf buds grow into tiny plants or may fall off and develop into new plants.
A) True
B) False
Question 10
Animal excreta and their dead bodies add ____ to the soil.
A) proteins
B) nutrients
C) minerals
D) vitamins