The electronegativity value of fluorine is:
The electronegativity value of fluorine is:
4.0 | |
3.0 | |
1.0 | |
2.0 |
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How many times are the liquids denser than gases:
How many times are the liquids denser than gases:
100 times | |
100,000 times | |
10,000 times | |
1000 times |
Deuterium is used to make:
Deuterium is used to make:
Heavy water | |
Hard water | |
Soft water | |
Light water |
Along the period, which one of the following decreases:
Along the period, which one of the following decreases:
Ionization energy | |
Atomic radius | |
Electronegativity | |
Electron affinity |
Formation of water from hydrogen and oxygen is:
Formation of water from hydrogen and oxygen is:
Acid-base reaction | |
Redox reaction | |
Neutralization | |
Decomposition |
The most abundant element occurring in the earth’s crust is:
The most abundant element occurring in the earth’s crust is:
Silicon | |
Nitrogen | |
Hydrogen | |
Oxygen |
Which one of the following burns with a brick red flame:
Which one of the following burns with a brick red flame:
Sodium | |
Calcium | |
Magnesium | |
Iron |
A bond formed between two non-metals is expected to be:
A bond formed between two non-metals is expected to be:
Covalent | |
Coordinate covalent | |
Metallic | |
Ionic |
Which one of the following is heterogeneous mixture:
Which one of the following is heterogeneous mixture:
Ink | |
Sugar solution | |
Milk of magnesia | |
Milk |
Dental amalgam for filling of tooth is a type of solution:
Dental amalgam for filling of tooth is a type of solution:
Liquid-liquid | |
Solid-solid | |
Liquid-solid | |
Gas-gas |
Which one is more stable and hard covalent compound:
Which one is more stable and hard covalent compound:
CO₂ | |
CH₄ | |
H₂SO₄ | |
C₆H₁₂O₆ |
Which one molecule will evaporate first:
Which one molecule will evaporate first:
C₁₂H₂₆ | |
C₈H₁₈ | |
C₁₀H₂₂ | |
C₆H₁₄ |
The father of nuclear science is:
The father of nuclear science is:
Rutherford | |
Crooks | |
Bohr | |
Thomson |
Lanthanum series started from Z = ?
Lanthanum series started from Z = ?
56 | |
59 | |
58 | |
57 |
Metal hydrides have oxidation number:
Metal hydrides have oxidation number:
-2 | |
-3 | |
-4 | |
-1 |
Which one is free radicals:
Which one is free radicals:
Cl₂ | |
Cl⁻ | |
Cl• | |
H⁺ |
In electroplating of silver, silver ions deposit on:
In electroplating of silver, silver ions deposit on:
Rubber | |
Spoon | |
Glass | |
Steel |
Mass of an electron is:
Mass of an electron is:
1.0087 x 10⁻²⁴ g | |
9.262 x 10⁻²⁴ g | |
1.672 x 10⁻²⁴ g | |
9.106 x 10⁻²⁸ g |
Which one of the following elements belongs to group eleven (11):
Which one of the following elements belongs to group eleven (11):
Cu (Copper) | |
B (Boron) | |
Zn (Zinc) | |
Ni (Nickel) |
Free mobile electrons are present in:
Free mobile electrons are present in:
Non-metals | |
Ionic compounds | |
Metals | |
Covalent compounds |