McqsFactory McqsFactory.com is the devoted website for multiple choice questions answers in Pakistan. McqsFactory has been specially designed to cover this paper for various such examinations. The material of McqsFactory has been collected after going through different examination papers.
A. Dissolving dirt
B. Increasing the temperature of water
C. Reducing the surface tension of water
D. Reacting chemically with dirt
Answer
Answer
C. Reducing the surface tension of water
Submitted by: Toheed Ahmed
The cracking sound heard when dry hair is combed with a hard rubber comb is due to _________?
A. The hair barging against the charged comb
B. The rubbing of the comb with the hair
C. Small electric sparks
D. None of the above
Answer
Answer
D. None of the above
Submitted by: Toheed Ahmed
In order to prevent the corrosion of iron pipes they are often coated with a layer of zinc. This process is termed as _________?
A. Galvanisation
B. Vulcanisation
C. Annealing
D. Electroplating
Answer
Answer
A. Galvanisation
Submitted by: Toheed Ahmed
Scalding with steam is more severe than scalding by boiling water because
A. Steam can penetrate the skin
B. Steam is at a higher temperature
C. Steam is at a higher pressure
D. Steam contains more energy than boiling water
Answer
Answer
D
Submitted by: Toheed Ahmed
Water is a highly effective coolant for a car engine because ___________?
A. Evaporation of water produces lot of cooling
B. Water boils at a comparatively high temperature
C. Water is good conductor of heat
D. Water has very high specific heat capacity
Answer
Answer
C. Water is good conductor of heat
Submitted by: Toheed Ahmed
A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to ___________?
A. Remain unaffected
B. Fall away from or towards the train depending upon the speed
C. Fall towards the train
D. Fall away from the train
Answer
Answer
C. Fall towards the train
Submitted by: Toheed Ahmed
A Fahrenheit thermometer indicates a temperature of 14°F. Its corresponding reading on the Celsius scale will be __________?
A. -10°C
B. +10°C
C. -20°C
D. +20°C
Answer
Answer
A. -10°C
Submitted by: Toheed Ahmed
Lead ball falls through water more slowly than through air because __________?
A. The value of `gi is less in water
B. Of the viscous force in water
C. Density of air is less than that of water
D. Of the surface tension of water
Answer
Answer
B. Of the viscous force in water
Submitted by: Toheed Ahmed
The rear view mirror of a motor vehicle is ________?
A. Concave
B. Convex
C. Plane
D. Biconcave
Answer
Answer
B. Convex
Submitted by: Toheed Ahmed
“Game Changer” is the autobiography of which famous Cricketer?
A. Wasim Akram
B. Shoaib Akhtar
C. Shahid Afridi
D. Misbah ul Haq
Answer
Answer
C. Shahid Afridi
Submitted by: Engr. Abdul Hafeez