Q.1:- Regarding the atom of a chemical element, the magnetic quantum number refers to ?
- Orientation
- Shape
- Size
- Spin
Q.2:- Molten NaCl (Sodium Chloride) is good conductor of electricity is due to ?
- Free Electron
- Free Ions
- Free Molecules
- None
Q.3:- A radioactive substance emits ?
- Alpha particles
- Beta particles
- Gamma particles
- All of the three
Q.4:- When a helium atom loses an electron it becomes ?
- A negative helium ion
- An alpha particle
- A positive helium ion
- A proton
Q.5:- Misch metal is widely used in the manufacture of which of the following ?
- Material of car brake
- Smoke detectors
- Cigarette Lighters
- Emergency Light
Q.6:- Which of the following Alkaline Earth Metals forms covalent compounds ?
- Magnesium
- Calcium
- Barium
- Beryllium
Q.7:- According to kinetic theory of gases ?
- There are intermolecular attractions
- Molecule have considerable volume
- There is no intermolecular attraction
- Speed of molecules decreases of each collision
Q.8:- Hydrochloric acid is also known as ?
- Galic acid
- Picric acid
- Muriatic acid
- Chloric acid
Q.9:- Curd is sour due to presence of ?
- Citric Acid
- Lactic Acid
- Acetic Acid
- None of these
Q.10:- Aluminium Oxide is a / an ?
- Basic Oxide
- Neutral Oxide
- Amphoteric
- Acid Oxide
Q.11:- The name catalysis was given by ?
- Rutherford
- Langmuir
- Grahm
- Berzelius
Q.12:- The long form of periodic table was developed by ?
- Bohr
- Menedeleev
- Range and Werner
- Rutherford
Q.13:- Iron rusts in the presence of ?
- Vacuum
- Moisture
- Oxygen
- Both (b) & (c)
Q.14:- Dialysis can separate which of the following in addition to the glucose from human blood ?
- Fructose
- Starch
- Protein
- Sucrose
Q.15:- Which method is used for the purification of Bauxite ore ?
- Magnetic separation
- Electrolysis
- Leaching
- Levigation
Q.16:- Gold and Silver are extracted from their respective ores by ?
- Smelting
- Roasting
- Leaching
- Hydro Metallurgy
Q.17:- Aluminium surface are often “Anodized”. This means the deposition of a layer of ?
- Chrominium Oxide
- Aluminium Oxide
- Nickel Oxide
- Zinc Oxide
Q.18:- The soft silvery metallic element which ionizes easily when heated or exposed to light and is present in atomic clock is ?
- Califonrium
- Calcium
- Cerium
- Cesium
Q.19:- Potassium Nitrate is used in the production of ?
- Health Drinks
- Fertilizer
- Synthetic Textiles
- None of these
Q.20:- The substance used as an activator in froth floatation process is ?
- Pine Oil
- Potassium Ethyl Xanthate
- Copper Sulphate
- Sodium Cyanide
Q.21:- Which of the following method is used to purify Tin ?
- Poling
- Electrolytic Refining
- Liquation
- All of these
Q.22:- Which of the following metals has least melting point ?
- Gold
- Silver
- Mercury
- Copper
Q.23:- The most common actinide is ?
- Thorium
- Europium
- Lanthanum
- Samarium
Q.24:- Diamond is an allotropic form of ?
- Germanium
- Carbon
- Silicon
- Sulphur
Q.25:- Chemically vermillion is ?
- Calcium Carbonate
- Potassium Nitrate
- Potassium Sulphide
- Mercury (II) Sulphide
- None of the above
