The rate of chemical reaction does not depend upon
1 Concentration
2 Catalyst
3 Temperature
4 Pressure
Why sun seems to be a red colour while sun-rising and sun- setting?
Rusting of iron involves 1 Oxidation 2 Reduction 3 Displacement 4 Decomposition
iS ELEMENT IRON RADIOACTIVE AND WHY?
‘No two electrons in an atom can have the same set of four quantum numbers’ is 1 Bohr’s law 2 Aufbau principle 3 Newton’s law 4 Pauli’s exclusion principle
any one who has interviewed at noida for SBI clerk i have my interview call on 23.10.2008
Chemical change does not take place in case of 1 Souring of milk into curd 2 Rusting of iron in atmosphere 3 Burning of magnesium ribbon in air 4 emitting of light by a red hot platinum wire
3 Answers Banking, Eastern Railway,
Define science
0 Answers Mahatma Gandhi University,
A mixture of iron filings and sand can be separated by 1 Heating 2 Sublimation 3 Hand picking 4 Magnetic separation
Brass is an alloy of 1 Nickel and copper 2 Zinc and copper 3 Nickel and zinc 4 Nickel and silver
Polythene is industrially prepared by the polymerization of 1 Methane 2 Styrene 3 Acetylene 4 Ethylene
3 Answers Amna Industries, HFI,
When was the indian made rocket “ rohini ” launched from thumba?
The hardest substance available on earth is 1 Platinum 2 Coal 3 Diamond 4 Gold
13 Answers FCI, University of Ilorin,