1071. Isotopes differ in :

A. Properties which depend upon Mass *
B. Arrangement of electrons in orbitals
C. Chemical properties
D. The extent to which they may be affected in electron magnetic field

1072. Formation of a cation is :

A. Oxidation *
B. Reduction
C. Redox
D. None

1073. The relative atomic mass of chlorine is 35.5 .What is the mass of 2 moles of chlorine gas ?

A. 142g *
B. 35.5g
C. 71g
D. 18.75g

1074. Current strength measure by electrometer by each type of ions in mass spectrometry shows ?

A. Charge
B. Mass
C. Relative Abundance *
D. Number of isotopes

1075. The following statements contained in a student’s laboratory report is a conclusion:

A. A gas is liberated
B. The gas’s oxygen is extremely acidic.
C. The gas is chlorine *
D. Color of the gas is greenish yellow

1076. Which of the following is not related to A.M.U ?

A. Kilo gram
B. Gram
C. Gram/Lit *
D. Microgram

1077. The number of moles of Co2 which contains 16 gram of oxygen is :

A. 0.25
B. 0.50 *
C. 0.75
D. 1.00

1078. A piece of paper is burnt in air, the gas produced is passed through distilled water. The PH of water will be :

A. 3
B. 2.1
C. 6.8 *
D. 7

1079. 0.36 moles of each of aluminum react with oxygen to produce aluminum oxide the amount of product formed is :

A. 0.18 mole *
B. 0.27 mole
C. 0.24 mole
D. 0.09 mole

1080. All of the following statements are incorrect for 20 moles of hydrogen peroxide except is has:

A. 80 moles of atoms *
B. 30 moles of oxygen atoms
C. 30 mole of hydrogen atoms
D. 20 moles of hydrogen atoms