A. Different atomic number but same atomic weight
B. Different atomic number and different atomic weight
C. Same atomic number and different atomic weight
D. None
Show AnswerAnswer= Option C
Chemistry
The chemical name of quartz is:
A. Silicon Dioxide
B. Stannous Oxide
C. Aluminium Oxide
D. None
Show AnswerAnswer= Option A
The atmosphere of moon consists of______________?
A. 90% Hydrogen, 10% Nitrogen
B. 80%Nitrogen, 20% Hydrogen
C. 60% Nitrogen, 40%inert gases
D. None
Show AnswerAnswer= Option C
The number of electrons of a neutral atom is automatically known if one knows the?
A. Atomic number
B. Atomic weight
C. Number of orbitals
D. none
Show AnswerAnswer= Option A
Which one of the following is the main culprit in the thinning of Ozone layer in the earth’s stratosphere?
A. Carbon dioxide
B. Chlorofluorocarbons
C. Nitrogen oxides
D. Methane
Show AnswerAnswer= Option B
Elements are made of _________?
A. Atoms
B. Molecules
C. H2O
D. Compounds
Show AnswerAnswer= Option A
One of the following countries produces maximum energy from atomic reactors?
A. France (80% from its Nuclear Reactors)
B. USA
C. UK
D. none
Show AnswerAnswer= Option A
The Beta particles are fast moving___________?
A. Protons
B. Electrons
C. Neutrons
D. None
Show AnswerAnswer= Option B
The alpha particles are compact clusters of______________?
A. Electron and Proton
B. Two Protons and two Neutrons
C. Three protons and three Neutrons
D. None
Show AnswerAnswer= Option B
Phosphorus is an essential component of one of the following biological molecules:
A. Amino acids
B. Nucleic acids
C. Carbohydrates
D. None
Show AnswerAnswer= Option B