Q) Angle of incidence = Angle of reflection, this rule is explained by ……. principle.
A) Fermat
B) Newton
C) Archimedes
D) Pascal
Q) Which one of these is not a contact force ?
A) ) Muscular force
B) Friction
C) Normal force
D) Magnetic force
CHEMISTRY
Q) Rusting of Iron is
A) Temporary change.
B) Physical change.
C) Chemical change.
D) NONE
Q) Magnesium hydroxide is
A) Acidic
B) Salt
C) Basic
D) Neutral
Q) The chemical name of Vinegar is
A) Magnesium oxide
B) Acetic acid
C) Hydrochloric acid
D) None
Q) Chemical energy is converted into heat by
A) Electrical heater
B) Solar heater
C) Gas stove
D) None
Q) 37°C equals to ……… °F
A) 98.2
B) 98.4
C) 98.6
D) 99
Q) Boiling point of water is
A) 0°C
B) 37°C
C) 100°C
D) -10°C
Q) The main constituent of coal is
A) Carbon
B) Oxygen
C) Air
D) Water
Q) Liquid Gold is
A) Kerosene
B) Diesel
C) Petroleum
D) Wax
Good
really good
Thank you.
Thank you very much
Well done
Good
Super very fentastic
social bits please