p Block Elements Online Mock Test 1

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p Block Elements Online Mock Test Set-1

1. Among the halogen acids, the weakest acid is
HI
HBr
HCl
HF


2. An element is burnt in limited supply of air to give an oxide A, which on treatment with water gives an acid B. Acid B on heating gives acid C which gives yellow precipitate with silver nitrate solution. Oxide A is
P2O3
SO2
CO2
NO2


3. An element which belongs to group 14 is soft in nature, does not react with pure water, but dissolves in water containing dissolved air. Then the element is
C
Ge
Pb
Ti


4. Inert gas used in beacon lights for safety of air navigation is
Helium
Argon
Neon
Xenon


5. The compound used as smoke screen is
PCl3
PCl5
PH3
H3PO3


6. The compound used to arrest the bleeding is
K2SO4
Potash alum
Al2(SO4)3
KI


7. The compound with garlic odour is
P2O3
P2O5
H3PO3
H3PO4


8. The compound with garlic taste is
H3PO4
H3PO3
P2O3
P2O5


9. The general electronic configuration of carbon family is
ns2np2
ns2np3
ns2np1
ns2np4


10. The lightest gas which is non-inflammable is
He
H2
N2
Ar


11. The metalloid among the following is
Pb
P
Ge
Sn


12. The noble gases are unreactive because they
have same number of electrons
have an atomicity of one
are gases with low density
have stable electronic configuration


13. The shape of PCl5 is
Bipyramidal
Trigonal bipyramidal
Linear
Tetrahedral


14. The shape of XeF4 is
Tetrahedral
Octahedral
Square planar
Pyramidal


15. The toxic element of Boron family is
Boron
Indium
Thallium
Gallium


16. Which of the following does not belong to group 13?
B
Al
Ge
In


17. Which of the following does not belong to group 14?
C
Si
Ga
Pb


18. Which of the following has the property of etching on glass?
HI
HF
HBr
HCl


19. Which of the following shows negative (–1) oxidation state only?
Br
F
Cl
I


20. Which of the following is most abundant in earth’s crust?
C
Si
Ge
Sn


21. Which of the following is the second most abundant element in earth’s crust?
Carbon
Silicon
Germanium
Tin


22. Halogens belong to the group number
14
15
17
18


23. Which is not known?
XeF6
XeF4
XeO3
ArF6


24. Which of the following has highest first ionisation energy?
He
Ne
Ar
Kr


25. Which has the least melting point?
B
Al
Ga
In


26. One can draw the map of building on a glass plate by
HI
HF
HBr
HCl


27. Without lone pair of electrons in AX3 type of interhalogen compounds, its shaped is
trigonal bipyramidal
tetrahedral
T - shaped
square planar


28. The metal which exist as a liquid at room temperature is
Germanium
Indium
Gallium
Thallium


29. The compound employed to arrest the bleeding is
K2SO4.Al2(SO4)3.4Al(OH)3
K2SO4.Al2(SO4)3.24Al(OH)3
K2SO4.Al2(SO4)3.4H2O
K2SO4.Al2(SO4)3.24H2O

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