Famous Elements and Properties
Total Questions: 33
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A ) Gold, Aluminium and Copper
B ) Iron, Nickel and Cobalt ✅
C ) Earth
D ) All of these
A ) 1.2 days
B ) 5.73 years
C ) 5730 years ✅
D ) 5.73 days
A ) Gold ✅
B ) Silver
C ) Sodium
D ) Aluminium
A ) Po
B ) P
C ) K ✅
D ) Pt
A ) Gold
B ) Glass ✅
C ) Copper
D ) Iron
A ) Baking soda
B ) Salt ✅
C ) Chalk
D ) Vinegar
A ) Coal ✅
B ) Copper
C ) Iron
D ) Wood
A ) Magnetite
B ) Bauxite ✅
C ) Hematite
D ) Monazite
A ) Pure Rubidium
B ) Aluminium Oxide ✅
C ) Rubidium Oxide
D ) None of these
A ) Aluminium Dioxide ✅
B ) Rubidium Oxide
C ) Rubidium
D ) Iron oxide
A ) Aluminium
B ) Thorium ✅
C ) Iron
D ) None of these
Explanation:
- Radioactivity was discovered by Becquerel.
- Radioactivity emerges from: Nuclear energy.
- Radioactivity is measured by which device Geiger counter.
- Thorium metal is not only magnetic but also radioactive Radioactive element are Plutonium, Thorium, Uranium.
- Alpha rays is a positively charged particle emitted by a radioactive element.
- A negatively charged particle emitted by a radioactive element during radioactive decay is called a Beta particle.
- Radioactive isotopes are used in medicine for both diagnostic imaging and treatment.
- A 100 g sample of a radioactive element has a half life of 5 days. 12.5grams of radioactive material will remain after 15 days.
- Radioactive elements have atomic number greater than82.
- Weak Nuclear Force is responsible for the radioactive decay of the nucleus.
- The radioactive material must be placed in a box of Lead.
- Radioactive cobalt 60 is used for curing: Cancerous cells.
- Radioactive isotope present in atmosphere is: carbon -14.
- Unstable nuclei are radioactive.When radioactivity rays are passed through air or any gas, they cause it to Ionize.
A ) Gold ✅
B ) Aluminium
C ) Argon
D ) Silver
A ) Teflon ✅
B ) PVC
C ) Polystyrene
D ) None of these
A ) Wrought iron ✅
B ) Pig iron
C ) Cast iron
D ) None of these
A ) Solid ✅
B ) Liquid
C ) Gas
D ) Plasma
A ) Chlorine
B ) Magnesium
C ) Washing soda ✅
D ) Calcium
A ) Poor conductor of electricity
B ) Brittle
C ) Malleable ✅
D ) Poor conductor of heat
A ) Copper
B ) Gold ✅
C ) Aluminium
D ) Lead
A ) Electrons
B ) Protons only
C ) Protons and neutrons ✅
D ) Neutrons only
A ) Zinc
B ) Lead
C ) Copper
D ) Uranium ✅
A ) Mercury
B ) Bromine
C ) Water
D ) Both a and b ✅
A ) Aluminium ✅
B ) Iron
C ) Copper
D ) Lead
A ) Tungsten ✅
B ) Helium
C ) Neon
D ) Argon
A ) Iron
B ) Tungston ✅
C ) Copper
D ) Aluminium
A ) Silicon
B ) Oxygen ✅
C ) Iron
D ) Copper
A ) Heavy water ✅
B ) Hard water
C ) Soft water
D ) Mineral water
A ) Argon ✅
B ) Oxygen
C ) Nitrogen
D ) Hydrogen
A ) Copper ✅
B ) Zinc
C ) Silver
D ) Iron
A ) Hydrogen
B ) Oxygen ✅
C ) Nitrogen
D ) Carbon
A ) Nitrogen
B ) Phosphorus
C ) Potassium
D ) All of these ✅
A ) C
B ) Ca ✅
C ) Cl
D ) Co
A ) Helium
B ) Hydrogen ✅
C ) Oxygen
D ) Nitrogen
A ) Iron
B ) Silicon ✅
C ) Copper
D ) Gold