The most reactive alkali metal among the following is
- Li
- Na
- Rb
- Cs
Submitted by :- Muhammad Nawaz
CHEMISTRY
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Sodium reacts more vigorously than lithium because
- It is a metal
- It has higher atomic mass
- It is more electronegative
- It is more electropositive
Submitted by :- Muhammad Nawaz
Potassium crystallizes in a body centered lattice. Hence, the coordination number of potassium in potassium metal is
-
- 6
- 8
- 4
- 12
Submitted by :- Muhammad Nawaz
Formula of gypsum is
-
- CaSO4
- CaSO4.2H₂O
- 2CaSO4.H2O
- CaSiO3
Submitted by :- Muhammad Nawaz
Which is the colour imparted by lithium to the flame?
-
- Golden yellow
- Grassy green
- Violet
- Red.
Submitted by :- Muhammad Nawaz
What is the structure of H2O2?
-
- Planar
- Non-planar
- Spherical
- Linear
Submitted by :- Muhammad Nawaz
Newly born hydrogen is known as ______.
-
- Protiumat
- Nascent hydrogen
- Atomic hydrogen
- Heavy hydrogen
Submitted by :- Muhammad Nawaz
The process of adsorption of hydrogen on palladium is known as:
-
- Syneresis
- Occlusion
- Diffusion
- D. Erosion
Submitted by :- Muhammad Nawaz
Which type of elements form ionic hydrides?
-
- Transition elements
- Metalloids
- Elements with high electronegativity
- Elements with high electro positivity
Submitted by :- Muhammad Nawaz
Which metal can produce dihydrogen gas by reaction with dil. H₂SO4?
-
- Ag
- Cu
- Fe
- Pt.
Submitted by :- Muhammad Nawaz