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Quiz 2
Mdcat-past-papers - ETEA - Chemistry Quiz
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Board: ETEA | Subject: Chemistry |
21. In which of the following compound hydrogen bond is not present?
H₂O
HF
CH₄
NH₃
22. A well known physical change is the melting of ice. The melting of ice is favored by:
Low P, Low T
Low T, high P
High T, high P
Low T, low P
23. Exceptionally low acidic strength of HF is due to:
Strong polar bond between H & F
Smaller Size of fluorine
More electronegativity of fluorine
Strong hydrogen bonding
24. Which of the following compound has less boiling point?
Water
Ethanol
Hydrogen Sulphide
Acetic acid
25. A pressure cooker reduces cooking time because:
A large heat is used
Heat is more evenly distributed
The higher pressure softens food inside
the boiling point of water rises inside
26. Which of the following compound has highest boiling point?
Water
Cyclopentane
Cycloheptane
Cyclobutane
27. Amount of heat absorbed, when one mole of liquid changes to gas at its boiling point is called:
Molar heat of sublimation
Latent heat of fusion
Heat of vaporization
Heat capacity
28. Molar heat of vaporization of water is:
40.7 cal / mol
40.7 kcal / mol
40.7 J / mol
40.7 kJ / mol
29. Distillation under very reduced pressure is is --distillation.
Destructive
Fractional
Steam
Vacuum
30. In crystalline structure, when length of all axes and angels are unequal then crystal will be:
Cubic
Monoclinic
Orthorhombic
triclinic
31. When an element occurs in different physical forms it is called:
Anisotropy
Isomerism
Polymorphism
Allotropy
32. The example of metallic solid is:
B
Cu
C
S
33. When a crystalline substance conducts current in one direction but not through other directions of the crystal, this property is called:
Allotropy
Isomorphism
Anisotropy
Polymorphism
34. What is the other name for Positive rays?
Canal rays
Magnetic rays
Quantum
Photon rays
35. What is the radius of the 3rd orbit of electron in H-atom?
3.39A°
4.761A°
5.29 × 10-1A°
9.7A°
36. What is the magnetic quantum number for S-orbital?
1
3
5
7
37. Which of the following sub-shell does not exist?
1p
5d
3s
2s
38. An unknown element having electronic configuration [Ne] 5s2 5p5 will be:
Metal of II-A group
Metalloid of V-A group
Non-metal of VIIA group
Non-metal of V-A group
39. The splitting of spectral lines in magnetic field is:
Aufbau principle
Stark effect
Pauli exclusion principle
Zeeman effect
40. Which element has the electronic configuration of noble gas notation [Kr] 5s2 4d2
Mo
Sr
Se
Zr
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