MCQGeeks
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
NEET
NEET Chemistry MCQ
S - Block Elements Mcq Neet Chemistry
Quiz 7
Solution
Q.1.
When K2O is added to water, the solution is basic because it contains a significant concentration of ...[ AIIMS 2001]
33%
a) O22-
17%
b) O3-
17%
c) OH-
33%
d) K+
Q.2.
The reactivity of the alkali metals sodium with water is made use of ? ..[M PMT 1994]
25%
a)In drying of alcohol
25%
b) In drying of ammonia solution
12%
c)In drying of Benzene
38%
d)As general drying agent
Q.3.
Which of the following statement is incorrect: [ AMU 1997]
0%
a) Aluminum is the most abundant metal in earth's crust
29%
b) Sodium is the most abundant metallic element in sea water
29%
c)Melting and boiling points of alkai metals decreases down the group
43%
d)Ionic character of alkali metal halides decreases down the group
Q.4.
When CO is passed over solid NaOH heat to 200°C , it forms ..[CBSE PMT 1998]
29%
a) Na2CO3
0%
b) H2CO3
71%
c)HCOONa
0%
d)All
Q.5.
Which of the following has the highest conductivity? [ Haryana CEET 1999]
17%
a) Li+
50%
b) Cs+
33%
c) Na+
0%
d) K+
Q.6.
A combustible gas is liberated when caustic soda solution is heated with ..[Raj. PMT 1994]
0%
a)S
71%
b) NH4Cl
0%
c)I2
29%
d)Zn
Q.7.
Sodium nitrate decomposes above 800°C to give ..[IIT 1998]
0%
a) N2
17%
b) O2
67%
c)NO2
17%
d)Na2O
Q.8.
On heating sodium metal in a current of dry ammonia, the compound formed is ...[KCET 2000]
50%
a) Sodium amide
17%
b) Sodium azide
33%
c)Sodium nitride
0%
d)Sodium hydride
Q.9.
On dissolving moderate amount of sodium metal in liquid NH3 at low temperature, which of the following does not occur? .. [AIIMS 2003]
33%
a) Blue coloured solution is obtained
0%
b) Na+ ions are formed in the solution
33%
c) Liquid NH3 solution becomes good conductor of electricity
33%
d) Liquid NH3 solution remains diamagnetic
Q.10.
Which of the following properties is not true for an alkali metal? [CPMT 1993]
33%
a)Low atomic volume
22%
b) Low ionization energy
22%
c)Low density
22%
d)Low electronegativity
Q.11.
Which of the following reacts with water at high rate? [ AFMC 1995]
29%
a) Li
0%
b) K
43%
c)Na
29%
d)Rb
Q.12.
The electronic configuration of metal M is 1s2, 2s2, 2p6, 3sThe formula of its oxide would be ... [MP PMT 1998]
17%
a) MO
0%
b) M2O
67%
c)M2O3
17%
d)MO2
Q.13.
The alkali metal that reacts with nitrogen directly to form nitride is .. [ MP PMT 2000]
33%
a) Li
33%
b) Na
17%
c) K
17%
d) Kb
Q.14.
Which of the following is known as fusion mixture? [ CBSE PMT 1993]
29%
a)Mixture of Na2CO3 + NaHCO3
0%
b) Na2CO3 . 10H2O
71%
c)Mixture of K2CO3 + Na2CO3
0%
d)NaHCO3
Q.15.
Sodium is made by the electrolysis of molten mixture of about 40% NaCl and 60% CaCl2 because...[CBSE PMT 1995]
14%
a) CaCl2 helps in conduction of electricity
43%
b) This mixture has a lower melting point than NaCl
14%
c)Ca2+ can displace Na from NaCl
29%
d)Ca2+ can reduce NaCl to Na
Q.16.
The stability of the following alkali metal chlorides follows the order .. [MP PMT 1998]
12%
a) LiCl > KCl > NaCl > CsCl
12%
b) CsCl > KCl > NaCl > LiCl
50%
c)NaCl > KCl > LiCl > CsCl
25%
d)KCl > CsCl > NaCl > LiCl
Q.17.
When sodium is treated with sufficient oxygen/air the product obtain is ...[AFMC 2002]
40%
a) Na2O
40%
b) Na2O2
0%
c) NaO2
20%
d) NaO
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page