Q.1.
Which of the following is a cyclic phosphate [ Haryana CEET 1196]
-
33%
a) H3P3O10
-
0%
b) H6P4O13
-
67%
c) H5P5O15
-
0%
d) H7P5O16
Q.2.
What may be expected to happen when phosphine gas is mixed with Hydrogen chloride gas[ AIEEE 2003]
-
33%
a) The mixture only cools down
-
33%
b) PCl3 and HCl are formed and the mixture warms up
-
0%
c) PCl5 and HCl are formed and mixture cools down
-
33%
d) PH4.Cl is formed with warming up
Q.3.
On adding excess of ammonium hydroxide to a copper chloride solution. [MH CET 1999]
-
33%
a) A deep blue solution is obtained
-
0%
b) No change is observed
-
67%
c) Blue precipitate of copper hydroxide is obtained
-
0%
d) Black precipitate of copper oxide is obtained
Q.4.
Phosphine is produced by adding water to [ KCET 1991]
-
0%
a) CaC2
-
0%
b) HPO3
-
33%
c) Ca3P2
-
67%
d) P4P10
Q.5.
The brown ring test for NO2- and NO3- is due to the formation of complex ion with a formula [ KCET 2000]
-
67%
a) [ Fe(H2O)5NO ]2+
-
33%
b) Mg3N2
-
0%
c) NH3
-
0%
d) MgO
Q.6.
The P-P-P bond angle in white phosphorus is [ MPCET 1991]
-
0%
a) 120°
-
50%
b) 109° 28'
-
0%
c) 90°
-
50%
d) 60°
Q.7.
The acid which forms two series of salt [ haryana CEET 1995]
-
50%
a) H3PO4
-
25%
b) H3PO3
-
25%
c) H3BO3
-
0%
d) H3PO2
Explanation
Q.8.
Which one of following substance has highest proton affinity [ AIEEE 2003 ]
-
0%
a) H2O
-
33%
b) H2S
-
67%
c) NH3
-
0%
d) PH3
Q.9.
NH3 and BF3 form an adduct readily because thy form [ KCET 2000]
-
33%
a) A coordinate bond
-
33%
b) A hydrogen bond
-
33%
c) An ionic bond
-
0%
d) A covalent bond
Q.10.
The correct sequence of decreases in the bond angle of the following hydrides is [ MPCET 2002]
-
33%
a) NH3 > PH3 > AsH3 > SbH3
-
0%
b) NH3 > AsH3 > PH3 > SbH3
-
67%
c) SbH3 > AsH3 > PH3 > NH3
-
0%
d) PH3 > NH3 > AsH3 > SbH3
Q.11.
Which of the following compound is not known ..[MP PMT 1988]
-
33%
c) NCl5
-
0%
a) NCl3
-
33%
b) NI3
-
33%
d) SbCl3
Q.12.
P - O - P bond is present in
-
0%
a) H4P2O7
-
0%
b) H4P2O5
-
100%
c) Both (a) and (b)
-
0%
d) None of the these
Explanation
Q.13.
Which of the following fluoride does not exist? [ MPCET 1993 ]
-
75%
a) NF5
-
0%
b) PF5
-
25%
c) AsF5
-
0%
d) SbF5
Q.14.
Brown colour in HNO3 can be removed by
-
0%
a) Adding Mg power
-
0%
b) Boiling the acid
-
67%
c) Passing HN3 through acid
-
33%
d) Passing air through warm acid
Q.15.
Read P can be obtained white P by [ Kernataka CET 1989]
-
33%
a) Heating in an atmosphere
-
0%
b) Distilling it in a inert atmosphere
-
0%
c) Dissolving it in CS2 and crystallizing
-
67%
d) Melting it and pouring the liquid into water
Q.16.
metal X on heating in nitrogen gas gives Y, Y on treatment with H2O gives a colourless gas which when passed through CuSO4 solution gives blue colour, Y is
-
0%
a) Mg(NO3)2
-
25%
b) Mg3N2
-
50%
c) NH3
-
25%
d) MgO
Q.17.
Which of the following has highest dipole moment? [ Haryana CEET 2000]
-
67%
a) NH3
-
0%
b) PH3
-
0%
c) AsH3
-
33%
d) SbH3
Q.18.
When ammonia is passed over heated copper oxide, the metallic copper is obtained. the reaction shows that ammonia is [ MPCET 2002]
-
0%
a) A dehydrating agent
-
0%
b) An oxidizing agent
-
50%
c) A reducing agent
-
50%
d) A nitrating agent
Explanation
Q.19.
Group 15 of the periodic table consists of the element N, P, As, Sb, and Bi. On passing from N to Bi, the oxides of the elements of general formula M2O3 become
-
33%
a) Stronger reducing agents
-
0%
b) More ionic
-
33%
c) More basic
-
33%
d) More volatile
Q.20.
Which oxide does not acts as reducing agent ? [ MPCET 1990]
-
33%
a) NO
-
0%
b) NO2
-
0%
c) N2O
-
67%
d) N2O5
Q.21.
Which of the following is used as fertilizer? [ CPMT 1998]
-
0%
a) CaC2
-
0%
b) NaAlO2
-
67%
c) Ca(H2PO4)2 . H2O +CaSO4
-
33%
d) All the three
Q.22.
In modern process, white phosphorus is manufactured by .. [ CPMT 1994]
-
67%
a) Heating a mixture of phosphorite mineral with sand and coke in an electric furnace
-
33%
b) Heating calcium phosphate with lime
-
0%
c) Heating bone ash with coke
-
0%
d) Heating phosphate mineral with sand
Q.23.
When excess of water is added to BiCl3 solution .. [ AFMC 1994]
-
0%
a) Ionization of BiCl3 is increased
-
0%
b) A white ppt of Bi(OH)3 is obtained
-
100%
c) BiCl3 is hydrolysed to give white ppt of BiOCl
-
0%
d) BiCl3 is precipitated
Q.24.
Which of the following is a cyclic phosphate? [ Haryana CEET 1996]
-
0%
a) H3P3O10
-
0%
b) H6P4O13
-
100%
c) H5P5O15
-
0%
d) H2P5O16
Q.25.
Phosphine is not obtained by the reaction when ... [ MP PMT 1989]
-
0%
a) White P is heated with NaOH
-
67%
b) Red P is heated with NaOH
-
0%
c) Ca3P2
-
33%
d) P4O6 is boiled with water
Q.26.
Aqueous solution of ammonia consist of .. [ CBSE PMT 1991]
-
0%
a) H+
-
0%
b) OH-
-
0%
c) NH4+
-
100%
d) NH4+ and OH-
Q.27.
Phosphrous pentaoxide find use as .. { BHU 1993]
-
0%
a) An oxidising agent
-
0%
b) A reducing agent
-
100%
c) A bleaching agent
-
0%
d) A dehydrating agent
Q.28.
Which of the following has least covalent [ CPMT 1996]
-
0%
a) PH3
-
0%
b) P2H62+
-
67%
c) P3H5+
-
33%
d) PH4+
Q.29.
EAch of the following is true of white and red phosphorus except that they ... [ CBSE PMT 1989]
-
0%
a) Are both soluble in CS2
-
67%
b) Can be oxidised by heating in air
-
0%
c) Consist of the same kind of atom
-
33%
d) Can be converted into one another
Q.30.
In P4O6 number of oxygen atoms bonded to each phosphorous atom is ... [MP PMT 1995]
-
67%
a) 1.5
-
0%
b) 2
-
0%
c) 3
-
33%
d) 4
Explanation
