Famous Elements and Properties
Total Questions: 33
A ) Gold, Aluminium and Copper
B ) Iron, Nickel and Cobalt ✅
C ) Earth
D ) All of these
A ) 1.2 days
B ) 5730 years ✅
C ) 5.73 days
D ) 5.73 years
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 . 12.5 grams 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 ) Silver
C ) Aluminium
D ) Argon
A ) Gold ✅
B ) Silver
C ) Sodium
D ) Aluminium
A ) P
B ) Po
C ) K ✅
D ) Pt
A ) Glass ✅
B ) Gold
C ) Silver
D ) None
A ) Baking soda
B ) Vinegar
C ) Salt ✅
D ) Chalk
A ) Coal ✅
B ) Iron
C ) Copper
D ) Wood
A ) Magnetite
B ) Bauxite ✅
C ) Hematite
D ) Monazite
A ) Rubidium oxide
B ) Pur rubidium
C ) Aluminium oxide ✅
D ) None of these
A ) Rubidium
B ) Aluminium dioxide ✅
C ) Rubidium oxide
D ) Iron oxide
A ) Polystyrene
B ) Teflon ✅
C ) PVC
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 ) Calcium
B ) Washing soda ✅
C ) Magnesium
D ) Chlorine
A ) Poor conductor of electricity
B ) Malleable ✅
C ) Poor Conductor of heat
D ) Brittle
A ) Copper
B ) Silver
C ) Gold ✅
D ) Iron
A ) Electrons
B ) Protons
C ) Neutrons
D ) Newtons and protons ✅
A ) Zinc
B ) Uranium ✅
C ) Lead
D ) Copper
A ) Mercury
B ) Bromine
C ) Water
D ) Both a and b ✅
A ) Copper
B ) Aluminium ✅
C ) Iron
D ) Lead
A ) Tungsten ✅
B ) Helium
C ) Neon
D ) Argon
A ) Aluminium
B ) Iron
C ) Tungsten ✅
D ) Copper
A ) Silicon
B ) Iron
C ) Oxygen ✅
D ) Carbon
A ) Heavy water ✅
B ) Hard water
C ) soft water
D ) Mineral water
A ) Oxygen
B ) Nitrogen
C ) Argon ✅
D ) Hydrogen
Explanation:
✅ Noble Gas :
A noble gas is a chemical element in Group 18 (also called Group VIII-A ) of the Periodic Table . Noble gases are colorless, odorless, tasteless, and nonreactive under normal conditions.
✅ They are called noble gases because they are inert (non-reactive) under normal conditions.
📘 Noble Gases List (Group 18 of Periodic Table):
✅ Helium (He)(2Atomic Number ) ✅ Neon (Ne) (10Atomic Number ) ✅ Argon (Ar)(18 Atomic Number ) ✅ Krypton (Kr)(36 Atomic Number ) ✅ Xenon (Xe) (54 Atomic Number ) ✅ Radon (Rn) (86 Atomic Number ) ✅ Oganesson (Og) (radioactive and synthetic) . (118 Atomic Number )
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 ) Cl
C ) Ca ✅
D ) Co
A ) Helium
B ) Hydrogen ✅
C ) oxygen
D ) Nitrogen
A ) Iron
B ) Silicon ✅
C ) Copper
D ) Gold