Chemistry - Online Test
Q1. Laughing gas is soluble in
Answer : Option A
Explaination / Solution:
N2O is soluble in water.
Q2. Electrical conductivity of semi conductors increases with increase in
Answer : Option A
Explaination / Solution:
Conductivity increases with temperature.
Q3. The correct increasing order of atomic radii for the same element is ----?
Answer : Option D
Explaination / Solution:
For the same element ,
- Metallic radius of atoms are always greater than corresponding covalent radius.
- Metallic radius is always lesser than van der Waal's radius
Hence , the correct increasing order of atomic radii of an element is
Q4. The commercial name of polyacrylonitrile is ______________.
Answer : Option A
Explaination / Solution:
Commercial name of polyacrylonirile is Orlon.
Q5. One of the orbitals is non-directional
Answer : Option D
Explaination / Solution:
Orbitals with subshell quantum number l = 0 are called s orbitals. All s orbitals are spherical in shape and have spherical symmetry. This means that the wave function will depend only on the distance from the nucleus and not on the direction.
Q6. The greenhouse effect is where:
Answer : Option D
Explaination / Solution:
The greenhouse effect is where heat energy is trapped by the atmosphere
Q7. Which is called chromic acid?
Answer : Option C
Explaination / Solution:
CrO3 is chromic oxide.
Q8. Which of the following hydrides is electron-precise hydride?
Answer : Option C
Explaination / Solution:
Electron precise hydride is the type of hydride in which the number of electrons present is equal to the number of electron required (octet or duplet). For example- CH4
CH4 has no lone pair of electron or vacant orbital so it is an electron precise hydride.
Q9. Which of the following has most acidic hydrogen?
Answer : Option B
Explaination / Solution:
2,4-hexanedione will have active metylene group.
Q10. Which isomerism is exhibited by the compound [Co(NH3)3(H2O)3]Cl3 ?
Answer : Option A
Explaination / Solution:
Complex of type [ Ma3b3] show geometrical isomerism.
