26. The element whose oxidation state in its every compound is the same ?
A. Hydrogen
B. Oxygen
C. Fluorine
D. Carbon
27. Which of the following does not pollute?
A. Cadmium
B. Arsenic
C. Nickel
D. Copper
28. The shape of the ethylene molecule is –
A. Linear
B. Tetrahedral
C. Hectohedral
D. Coplanar Triangular
29. Teflon is a/an –
A. Fluorocarbon
B. Insecticide
C. Pesticide
D. Hydro Carbon
30. Mohr Salt is a –
A. Simple Salt
B. Double Salt
C. Complex Salt
D. Hybrid Salt