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Recent questions tagged silicon
+2
votes
1
answer
Complete and balance the reaction of the hydrolysis of silicon tetrachloride SiCl4.
asked
Apr 6, 2019
in
JEE
by
kratos
jee
silicon
p-element
jee mains
carbon
+3
votes
1
answer
What allotrope modification of carbon is the most hardness? А. Fullerene B. carbine C. graphite D. diamond
asked
Apr 4, 2019
in
JEE
by
kratos
р-elements
jee
silicon
jee mains
carbon
+1
vote
1
answer
Which of the listed electronic configurations corresponds to the р-elements of IVA groups?
asked
Mar 17, 2019
in
JEE
by
kratos
р-elements
jee
silicon
jee mains
carbon
+3
votes
1
answer
Complete and balance the reaction of the hydrolysis of calcium carbide CaC2 Point out the sum of the coefficients
asked
Feb 28, 2019
in
JEE
by
kratos
silicon
jee mains
р-elements
carbon
jee
+2
votes
1
answer
What volume of hydrogen at STP will be released at dissolving of silicon Si (mass of Si = 14 g) in alcali?
asked
Feb 18, 2019
in
JEE
by
kratos
jee
silicon
p-element
jee mains
carbon
+1
vote
1
answer
Activated charcoal is used to remove colouring matter from pure substances. It works by-
asked
Feb 16, 2019
in
Chemistry
by
kratos
р-elements
cbse
surface chemistry
jee
silicon
jee mains
class-12
carbon
+3
votes
1
answer
Which of the following carbide does not release any hydrocarbon on reaction with water.
asked
Feb 14, 2019
in
Chemistry
by
kratos
silicon
class-11
jee mains
class-10
р-elements
carbon
icse
jee
organic chemistry
hydrogen
+3
votes
1
answer
For the obtaining of carbon (ІІ) oxide in laboratory is used such compounds:
asked
Feb 14, 2019
in
JEE
by
kratos
р-elements
jee
silicon
jee mains
carbon
+2
votes
1
answer
The carbide which gives propyne on hydrolysis is : (A) Al4C3 (B) CaC2 (C) Fe3C (D) Mg2C3
asked
Feb 9, 2019
in
JEE
by
kratos
р-elements
jee
silicon
jee mains
carbon
p - block element
+3
votes
1
answer
What is the function of activated charcoal ?
asked
Feb 5, 2019
in
Chemistry
by
kratos
р-elements
cbse
surface chemistry
jee
silicon
jee mains
class-12
carbon
+2
votes
1
answer
In the following figures which one corresponds to which type of equilibrium : (A) figure (i) corresponds to unstable equilibrium
asked
Jan 29, 2019
in
JEE
by
kratos
р-elements
motion of system of particles
class-11
jee
rigid bodies
silicon
jee mains
class-12
carbon
+3
votes
1
answer
What compounds are the main air pollutions?
asked
Jan 27, 2019
in
JEE
by
kratos
р-elements
jee
silicon
jee mains
carbon
+2
votes
1
answer
The correct statements among I to III regarding group 13 element oxides are, (I) Boron trioxide is acidic.
asked
Jan 26, 2019
in
Class 12
by
kratos
neet
р-elements
jee
silicon
jee mains 2019
jee mains
carbon
p - block element
+1
vote
1
answer
What is the hybridization in graphite, diamond and fullerene?
asked
Jan 9, 2019
in
Class 12
by
kratos
neet
р-elements
p-block elements
p-block element
aiims
jee
class-11
silicon
jee mains
class-12
carbon
+2
votes
1
answer
Which of the following reactions corresponds to the definition of enthalphy of formation ?
asked
Dec 29, 2018
in
JEE
by
kratos
р-elements
class-11
jee
physical education
class-9
silicon
jee mains
carbon
+2
votes
1
answer
How to get silicon in industry? А. reduction of its oxide by carbon (IV) oxide
asked
Dec 25, 2018
in
JEE
by
kratos
р-elements
jee
silicon
jee mains
carbon
+3
votes
1
answer
Which crystalline grate is in the structure of diamond? А. ionic B. atomic C. molecular D. metallic
asked
Dec 24, 2018
in
JEE
by
kratos
silicon
jee mains
р-elements
carbon
jee
+2
votes
1
answer
Silicagel is an effective adsorbent. Choose the correct formula of silicagel?
asked
Dec 22, 2018
in
JEE
by
kratos
jee
silicon
p-element
jee mains
carbon
+3
votes
1
answer
Why are ionic compounds crystalline solid
asked
Dec 21, 2018
in
JEE
by
kratos
metals and nonmetals
р-elements
cbse
class-11
jee
hydrogen
class-10
silicon
icse
jee mains
carbon
+2
votes
1
answer
Reduction of silicon dioxide
asked
Dec 6, 2018
in
JEE
by
kratos
р-elements
cbse
the p block elements
class-11
jee
silicon
jee mains
p-block element
carbon
p - block element
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