Curd is sour due to presence of
(a) Acetic Acid
(b) Citric Acid
(c) Lactic Acid
(d) None of these
Answer:
The element common to all acids is
(a) Sulphur
(b) Oxygen
(c) Hydrogen
(d) Nitrogen
Answer:
Aluminium oxide is a/an
(a) Amphoteric
(b) Acid oxide
(c) Basic oxide
(d) Neutral oxide
Answer:
The acid used in eye wash is
(a) Boric acid
(b) Oxalic acid
(c) Nitric acid
(d) None
Answer:
Enzymes are
(a) Protein
(b) Carbohydrates
(c) Acids
(d) None
Answer:
Which one of the following has maximum colorific value
(a) Coal gas
(b) Oil gas
(c) Water gas
(d) Producer gas
Answer:
Which hydrocarbon is mainly present in gobar gas
(a) Methane
(b) Ethane
(c) Butane
(d) Propane
Answer:
A mixture of carbon monoxide and hydrogen is called
(a) Natural gas
(b) Producer gas
(c) Water gas
(d) None
Answer:
Isotonic solutions have the same
(a) Normality
(b) Density
(c) Strength
(d) Molar concentration
Answer:
Galvanised iron sheets have a coating of
(a) Tin
(b) Lead
(c) Zinc
(d) Chromium
Answer: