Question 662 Glucose is a? A) Monosaccharide B) Trisaccharide C) Disaccharide D) Polysaccharide No Details
Question 664 The major constituent of air is ? A) Nitrogen B) Carbon C) Oxygen D) Hydrogen No Details
Question 665 Which gas is filled in refrigerators ? A) Chlorofluoro carbon B) Acetylene C) Methane D) Butane No Details
Question 666 Brass is an alloy of ? A) Copper and tin B) Copper and Zinc C) Copper and Aluminium D) Iron and Copper No Details
Question 668 The concept of elliptical orbital was suggested by ? A) Thomson B) Neil Bohr C) Rutherford D) Sommerfeld No Details
Question 670 The main actine constituent of tea and coffee is ? A) Nicotine B) Chlorophyll C) Caffeine D) Aspirin No Details