Q.1:- The information not conveyed by thermodynamics is about ?
- Spontaneity of a reaction
- Yields of the products formed
- Rates of reactions
- All the three above
Q.2:- The standard heat of formation of diamond is ?
- Same as that of graphite
- Greater than of graphite
- Less than that of graphite
- Taken as zero
Q.3:- Modern periodic law had been given by ?
Q.4:- The most electronegative element among the following is ?
Q.5:- First of all the elements were classified by ?
- Lother Meyer
Q.6:- The sum of mole fractions of the two components of a binary solution is always ?
- More than one
- Less than one
- Exactly one
- Not fixed
Q.7:- Blood has been found isotonic with ?
- Saturated solution of NaCl
- Saturated solution of KCl
- Saturated solution of 1.1 mixture of NaCl and KCl
- Normal Sodium Chloride solution
Q.8:- To protect Iron against corrosion, the durable metal plating on it, is ?
- Tin Plating
- Copper Plating
- Zinc Plating
- Nickel Plating
Q.9:- Adsorption due to strong chemical forces is called ?
- Reversible Adsorption
- Both A and C
Q.10:- The ability of a catalyst to accelerate the chemical reaction is known as ?
- Positive Catalysis
- Negative Catalysis
Q.11:- Which of the following does not contain a Hydrophobic structure ?
- Linseed Oil
Q.12:- Flux reacts with the impurities to form fusible material which is known as ?
Q.13:- Most of the explosions in mines occur due to the mixing of ?
- Hydrogen with Oxygen
- Oxygen with Acetylene
- Methane with Air
- Carbon Dioxide with Ethane
Q.14:- Which of the following statements is true ?
- All ores are minerals
- All minerals are ores
- A mineral cannot be an ore
- An ore cannot be a mineral
Q.15:- Which of the following is an ore of Copper here ?
Q.16:- Silver is present in ?
Q.17:- Carbon decomposes potassium carbonate into ?
Q.18:- Anhydrous Zinc Chloride is prepared by heating ?
- Both (B) and (C))
Q.19:- Cinnabar is an ore of ?
Q.20:- If steel is heated to a temperature well below red heat and is then cooled slowly, the process is called ?
Q.21:- The chemical name of quick lime is ?
- Calcium Chloride
- Calcium Oxide
- Calcium Carbonate
Q.22:- The nature of an aqueous solution of FeCl2 is ?
Q.23:- The chemical name of Plaster of Paris is ?
- Calcium Chloride
- Calcium Nitrate
- Calcium Sulphate Hydrate
- None of these
Q.24:- The alum used for purifying water is ?
- Chrome Alum
- Ammonium Alum
- Potash Alum
- Ferric Alum
Q.25:- Chief constituent of water glass is ?
- Calcium Silicate
- Sodium Silicate
- Magnesium Silicate
- Silicic Acid