Q.1:- The polymerisation of which of the following is used in manufacturing of polythene in industry ?
- Methane
- Styrene
- Acetylene
- Ethylene
Q.2:- The metal used in printing press is an alloy of ?
- Lead and Copper
- Lead and Antimony
- Lead and Bismuth
- Lead and Zinc
Q.3:- A polymeric substance used to make parachute is ?
- Rayon
- Viscose
- Cotton
- Terylene
Q.4:- Which is the purest form of Iron ?
- Steel
- Cast Iron
- Pig Iron
- Wrought Iron
Q.5:- Which of the following alloy is used in making magnet ?
- Duralumin
- Stainless Steel
- Elniko
- Magnalium
Q.6:- Which of the following is the main Nitrogenous waste in humans ?
- Ammonia
- Urea
- Uric Acid
- Ammonium Nitrate
Q.7:- Radioactive disintegration of Uranium ultimately results in formation of ?
- Radium
- Thorium
- Polonium
- Lead
Q.8:- Which of the following is the petroleum wax ?
- Bees wax
- Carnauba wax
- Paraffin wax
- Jojoba wax
Q.9:- Which one of the following is used to restore the colour of old oil paintings ?
- Ozone
- Hydrogen Peroxide
- Barium Peroxide
- Sodium Peroxide
Q.10:- Impure camphor is purified by ?
- Sublimation
- Fractional Crystallisation
- Fractional Distillation
- Steam Distillation
Q.11:- Brass is an alloy of ?
- Lead and Tin
- Zinc and Copper
- Antimony, Tin and Lead
- Zinc, Tin and Copper
Q.12:- Silver Nitrate solution is kept in brown bottles in laboratory because ?
- It reacts with ordinary white bottles
- Brown bottles stops the passage of light through it
- Brown bottles do not react with it
- Brown bottles react with it
Q.13:- Taj Mahal is greatly affected due to ?
- Tourists
- Acid Rain
- Deforestation
- Sound Pollution
Q.14:- Which one of the following is used as preservative for foodstuff ?
- Sodium Benzoate
- Picric Acid
- Glycerine
- Sodium Chloride
Q.15:- Mercury is a ?
- Solid Metal
- Liquid Metal
- Solid Non-Metal
- Liquid Non-Metal
Q.16:- The major component in the LPG is ?
- Methane
- Butane
- Ethane
- Propane
Q.17:- Conduction band electrons have more mobility than holes because they ?
- Are lighter
- Experience collision less frequently
- Have negative charge
- Need less energy to move them
Q.18:- Which of the following is the major constituent of LPG ?
- Methane
- Ethane
- Propane
- Butane
Q.19:- The gas used to dilute Oxygen for breathing by deep sea divers is ?
- Neon
- Argon
- Nitrogen
- Helium
Q.20:- The process of covering water pipes made of Iron with Zinc layer to prevent corrosion is called ?
- Zinc Plating
- Alloy Formation
- Vulcanization
- Galvanization
Q.21:- Iodine value is used to estimate ?
- Hydroxyl groups in oil
- Alkali content in oil
- Unsaturation in oil
- Carboxylic Groups in oil
Q.22:- The sewage obtained from water closets and urinals is known as ?
- Sanitary Waste
- Industrial Waste
- Garbage
- Sullage
Q.23:- In silvery paints, the main constituent present is ?
- Aluminium powder
- Silver Powder
- Lead Powder
- White Lead
Q.24:- In organic compounds, Nitrogen is estimated by ?
- Carius method
- Victor-Meyer’s Method
- Liebig’s Method
- Dumas’ Method
Q.25:- Which gas emitted by power stations causes acid rain ?
- Carbon Dioxide
- Sulphur Dioxide
- Helium
- Nitrogen
