Cooking gas is mixture of which two gases?

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1. Which of the following mixture of gases is required in gas welding?

   A. Oxygen and ethylene B. Oxygen and hydrogen C. Acetylene and oxygen D. Acetylene and hydrogen Submitted by: Ashfaque Ali Khoso...

2. By which process does the smell of cooking spread to all the rooms in a house?

   A. Distillation B. Diffusion C. Decomposition D. Displacement Submitted by: Malik Asghar Hussain...

3. Non stick cooking utensils are coated with________?

   A. Black paint B. PVC C. Teflon D. polystyrene Submitted by: Muhammad Ali Kunbhar...

4. The over-cooking of food should be avoided because____________?

   A. Make the food difficult to digest B. Reduce the nutrition value of food C. Make food Poison D. None Submitted by: Naintara Mustafa...

5. The gas, commonly known as “laughing gas”, is

   A. Carbon Dioxide B. Sulfur Dioxide C. Nitrous Oxide D. Sodium Oxide...

6. Which of the gas is not known as green house gas?

   A. Methane B. Nitrous oxide C. Carbon dioxide D. Hydrogen Submitted by: Farjan Ahmed Soomro...

7. As comets get close to the sun, they start to “melt” and release gas and dust. This gas and dust forms what?

   A. “coma” around the comet’s nucleus and a long tail that points away from the sun B. “coma” that points away from the sun and a long tail around the comet’s nucleus C. Only “coma” around the comet’s nucleus D. Only a long tail that points away from the sun Submitted by: Muhammad Abdullah...

8. Glass is made of the mixture of______________?

   A. Quartz and Mica B. Sand and Salt C. Sand and Silicates D. None of these Submitted by: Jack Sparrow...

9. What is a mixture of Potassium Nitrate Powdered Charcoal and Sulphur called?

   A. Paint B. Glass C. Gun Powder D. Cement Submitted by: ABDUL HAYEE...

10. A mixture of sand and naphthalene can be separated by ________ ?

    A. Chromatography B. Fractional distillation C. Sublimation D. None of these Submitted by: Rashid Mehmood...