0 of 30 questions completed
You have already completed the quiz before. Hence you can not start it again.
Test is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
0 of 30 questions answered correctly
Time has elapsed
You have reached 0 of 0 points, (0)
Supersonic jet causes pollution by thinning of
Which type of reaction produces the most harmful radiation?
Which type of glass is used for making glass reinforced plastic?
Glycol is added to aviation gasoline because it
Now-a-days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps?
Lens is made up of
Which of the following is responsible for the extra strength of pyrex glass?
The addition of gypsum to Portland cement helps in :
Hard steel contains
Cement is formed by strongly heating a mixture of
Glass is a
The temperature of oxy-acetylene flame is around
The Refrigerant ‘FREON’ is
A balloon filled with helium rises in air because
Cooking oil is converted into vegetable ghee by the process of-
Rusting of iron requires –
Glass is a –
Uranium eventually decays into a stable isotope of –
Which of the toxic heavy metals is found in modern tannery industries?
Which of the following contains high content of lead?
Stainless steel is an alloy of
Raw materials used for the manufacture of glass are
Which of the following is used in welding broken pieces of iron rails and machine parts?
The BOD values of water indicate the
The product used for manufacturing of Industrial alcohol is
The metals commonly used for electroplating are
Which of the following in automobile exhaust can cause cancer?
In the absence of ozone layer, which rays will enter into atmosphere?
Cement is usually a mixture of:
Electric bulbs are filled with :