General Chemistry (Part 1) Flashcards
Beryllium Sulphate is less soluble in water due to:
high inflammable energy
What is the name of that system which uses radioactivity to decide the period of materials of pre his tone period?
carbon dating
Cement is made hard with
hydration and dissociation of water
What happens when a chemical bond is formed?
Energy is always absorbed.
Which among the following is a carbohydrate?
Nylon | Cane sugar | Turpentine | Hydrogen peroxide
cane sugar
Which of the following states maximum iron ore is found?
FeCO3 | Fe2O3 | Fe3O4 | FeS2
Fe203
Which one of the following metals pollutes the air of a city having large number of automobiles?
Cadmium | Chromium | Lead | Copper
lead
What is the Chemical name for baking soda?
sodium bicarbonate
An atomic pile is used for:
conducting nuclear fission
Which of the following gases is present under pressure in soft drinks?
Oxygen | Nitrogen | Carbon dioxide | Nitrous oxide
carbon dioxide
The substance which does not expand on going from liquid state to solid state is:
type metal
Heart pacemakers is:
uranium
The element which is commonly used in nuclear for producing electricity by nuclear fission is:
uranium
Table salt gets moist during rainy season because:
Sodium chloride contains hygroscopic impurities like magnesium chloride.
Which of the following is used as a lubricant in heavy machines?
Bauxite | Sulfur | Phosphorus | Graphite
graphite
The anode in a dry cell consists of:
zinc
Which of the following is used to iodine common salt?
Potassium Iodate | Iodine | Potassium Iodide | Sodium Iodide
potassium iodide
Milk is a colloidal system in which:
Fat is dispersed in water.
The enzyme that converts glucose to ethyl alcohol is:
zymase
Silk fiber chemically is:
protein