which Compound Destroy The OZONE ?
A. CFCs
B. CH3COOH
C. BOTH A & B
D. None Of These
In whole Periodic Table which element Is Most Reducing Agent ?
A. Chlorine
B. lithium
C. Helium
D. Neon
Effective volume is usually taken for:
A. 2 moles of gas
B. 1 mole of gas
C. 5 moles of gas
D. 3moles of gas
Process used to separate insoluble particles from liquids is:
A. Drying
B. Filtration
C. Sieving
D. Extraction
Column of manometer which faces liquid is:
A. Raised
B. Depressed
C. Compressed
D. Remains same
Quantum numbers are:
A. Arithmetical values
B. Numerical values
C. Leometric values
D. Logical values
Distance at which attractive forces of hydrogen overcome repulsive forces is:
A. 75.2pm
B. 75.3pm
C. 75.5pm
D. 75.4pm
In a group, atomic radii increase due to successive increase of ___ ?
A. Electronic shells
B. Proton shells
C. Neutron shells
D. Nucleus
Chromatography is used to separate:
A. Solution
B. Mixtures
C. Molecules
D. Atoms
In SI base units, 1 Bq is equal to:
A. 10 disintegration per second
B. 1.5 disintegration per second
C. 0.01 disintegration per second
D. 1 disintegration per second
