Set of Important MCQs on Carbon and Silicon Chemistry in inorganic chemistry for the preparation of tests for chemistry and biology.Â
Which of the mentioned properties shows a regular increase on moving down the group from carbon to lead (Group IV A).
- Atomic radius
- Atomic volume
- Density
- All A, B, and C
Question’s Answer: All A, B, and C
Group IV A consist of how many elements?
- 3
- 2
- 6
- 5
Question’s Answer: 5
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Hemimorphite is an example of
- Pyrosilicate
- Orthosilicate
- Cyclic silicate
- Meta silicate
Question’s Answer: Pyrosilicate
Which of the mentioned is a chain silicate?
- Olivine
- Zeolite
- Beryl
- Tremolite
Question’s Answer: Tremolite
Sodium silicate is helpful and used
- As a furniture polish.
- As a preservative of eggs
- In fire proofing of wood and textiles
- All A, B, and C
Question’s Answer: All A, B, and C
The property of self-linking is known as catenation. Which of the mentioned metals has more catenation tendency?
- Ge
- Si
- C
- Sn
Question’s Answer: C
Which of the mentioned elements is the main constituent of all inorganic matter?.
- Carbon
- Tin
- Silicon
- Lead
Question’s Answer: Silicon
The penultimate shell of carbon contains electrons ____.
- s2p6d8
- s2p6
- s2p6d10
- s2
Question’s Answer: s2
What forces are present between layers in graphite?
- van der Waals forces
- Covalent forces
- Dipolar forces
- Ionic forces
Question’s Answer: van der Waals forces
What is the magnitude of C-C bond distance in graphite?
- 1.415 Ã…
- 4.145 Ã…
- 0.145 Ã…
- 2.415 Ã…
Question’s Answer: 1.415 Å
Which of the mentioned element has diamond like structure?
- Sn
- Si
- C
- Pb
Question’s Answer: C
Which are the gases that are responsible for greenhouse effect.
- CO2 & CH4
- N2O
- CFC
- All A, B, and C
Question’s Answer: All A, B, and C
Which of the mentioned are helpful and used as water repellent?
- Carbides
- Silicon
- Silicones
- Silicates
Question’s Answer: Silicones
Which of the mentioned do not freeze at low temperature as -40°C and don’t melt at 200°C
- Carbides.
- Silicon
- Silicones
- Silicates
Question’s Answer: Silicones
Which of the mentioned statement is not true regarding diamond?
- It is a colorless and transparent substance
- It is the hardest substance known
- Each carbon is sp hybridized
- Its density is 2.2 g/cc
Question’s Answer: Its density is 2.2 g/cc
Which of the mentioned bonds is weakest?
- Si-Cl
- Si-O
- Si-H
- Si-Si
Question’s Answer: Si-Si
Tetra hahdes of which elements do not undergo hydrolysis.
- C
- Si
- Sn
- All A, B, and C
Question’s Answer: C
White lead is _____ .
- PbCO3
- PbCO3.PbO
- PbS04.PbO
- Pb(OH)2.2PbCO
Question’s Answer: Pb(OH)2.2PbCO
Fullerenes are carbon clusters having cage like structures. Which of the mentioned carbon clusters are possible?
- C32
- C50
- C76
- All A, B, and C
Question’s Answer: All A, B, and C
C60 structure is called Buckminster fullerence in the honor of American architect. Which of the mentioned facts is true regarding this structure?
- Its structure is like soccer ball
- It has 12 five membered rings and 20 six membered rings
- The carbon atom is sp² hybridized
- All A, B, and C
Question’s Answer: All A, B, and C
Setting of cement is improved by which of the following?
- Gypsum
- Clay
- Lime stone
- Water
Question’s Answer: Gypsum
Any substance which has solidified from the liquid state with crystallization is known as _____
- Glass
- Fiber
- Steel
- Asbestos
Question’s Answer: Glass
Glass obtained by placing a layer of butyral plastic with a suitable adhesive between two layers of glass and cementing them by  heat and pressure is called
- Safety glass
- Glass wool
- Optical glass
- Jena glass
Question’s Answer: Safety glass
The general trend in the properties of elements of carbon shows that with increase in atomic number
- The tendency towards catenation increases
- The tendency to show +2 oxidation state increases
- Metallic character decreases
- The tendency to form complexes with covalence higher than four decreases.
Question’s Answer: The tendency to show +2 oxidation state increases
The nature of bonds in compounds of carbon and silicon is mostly ______ .
- Metallic
- Electrovalent
- Covalent
- Both A. and B.
Question’s Answer: Covalent
Graphite is a good conductor of electricity, as it ____
- Has sp-hybridized carbon atoms
- Is crystalline
- Has free electrons
- Has free atoms
Question’s Answer: Has free electrons
Which of the mentioned is true for CO?
- Donor and acceptor
- Base
- Donor
- Acid
Question’s Answer: Donor and acceptor
Which among the following is a false statement?
- SiO2 has a structure similar to that of COâ‚‚
- Natural Si exists only in the combined state
- Si can be prepared by reducing SiO2 with Mg
- Si does not exist in graphite-like structure, but exists only in diamond- like structure
Question’s Answer: SiO2 has a structure similar to that of CO₂
Which of the mentioned oxides is neutral as well as toxic?
- SnO
- CO
- CO2
- PbO
Question’s Answer: CO
Which of the mentioned oxides is acidic and solid at room temperature?
- CO2
- PbO2
- SiO2
- SnO2
Question’s Answer: SiO2
Which of tetrachloride is resistant n by hydrolysis?
- SiCl4
- CCl4
- GeCl4
- SnCl4
Question’s Answer: CCl4
Which of the mentioned compounds would be most ionic in character?
- PbCl4
- PbCl2
- SnCl4
- SnCl2
Question’s Answer: PbCl2
Elements of group 14 having the electronic configuration of their outer shell as _______ .
- ns2 np2
- ns2 np3
- ns2 np6
- n s2
Question’s Answer: ns2 np2
Which of the mentioned statements is a true regarding element of group 14?
- Exhibit oxidation state of +3
- Form M3+ and M¹+ ions
- Exhibit oxidation state of +4
- Form M and M¹+ ions
Question’s Answer: Exhibit oxidation state of +4
What is Catenation?
- Formation of long chain of identical atoms
- Deposition of cations
- Formation of cations
- Formation of covalent bond
Question’s Answer: Formation of long chain of identical atoms
The metallic character of group 14 elements
- Decreases from top to bottom
- Increases from top to bottom
- Does not change gradually
- Has no significance
Question’s Answer: Increases from top to bottom
Which of the bonds possesses highest bond energy?
- Ge-Ge
- Si-Si
- C-C
- Sn-Sn
Question’s Answer: C-C
Inert pair effect is ideally shown by _____ .
- Pb
- C
- Sn
- Si
Question’s Answer: Pb
The most stable oxidation state shown by lead is/are
- +2, +4
- +4 only
- +3, +4
- +2 only
Question’s Answer: +2 only
Which of the mentioned statements is not true for carbon?
- Its forms compounds with multiple bonds
- Its ionization energy is very high
- It undergoes catenation
- It shows inert pair effect
Question’s Answer: It shows inert pair effect
Which property is not exhibited by carbon in its compounds?
- Forming bonds to other carbon atoms
- Forming compounds with coordination number beyond four
- Exhibiting allotropic forms
- Forming multiple forms
Question’s Answer: Forming compounds with coordination number beyond four
Diamond and carbon are the of carbon
- Allotropic
- Amorphous
- Isotropic
- Isomeric
Question’s Answer: Allotropic
Which of the mentioned statements is true for the glass?
- Super-cooled liquid
- Amorphous solid
- Crystalline solid
- All A, B, and C
Question’s Answer: All A, B, and C
Lead pencils contain
- Lead
- Graphite
- A mixture of lead and silica
- Lead sulphide
Question’s Answer: Graphite
The silicate chains are present in
- Silica
- Clays
- Beryl
- Asbestos
Question’s Answer: Asbestos
Which of the mentioned elements forms only one hydride?
- Pb
- Si
- Sn
- Ge
Question’s Answer: Pb
The green color of glass is due to the presence of which of the following?
- Mn (IV)
- Cobalt (II)
- Chromium (III)
- Iron (III)
Question’s Answer: Chromium (III)
Synthesis gas is a mixture of which of the following?
- CO2 & H2
- CO & H2
- CO2 & CH4
- CO2 & N2
Question’s Answer: CO & H2
Blue color of glass is due to the presence of which of the following?
- Mn (II)
- Chromium (III)
- Iron (III)
- Cobalt (II)
Question’s Answer: Cobalt (II)
Dry ice is ______.
- Solid CO
- Solid SOâ‚‚
- Solid NH3
- Solid COâ‚‚
Question’s Answer: Solid CO₂
Which of the mentioned compounds combines with hemoglobin?
- CO
- CO2
- NO
- N2
Question’s Answer: CO
Which of the mentioned elements is helpful and used in solar cells?
- Sn
- Ti
- Si
- Ge
Question’s Answer: Si
Which of the mentioned compounds is obtained by the hydrolysis of trialkylchlorosilane?
- RSi(OH)4
- Râ‚‚Si(OH)â‚‚
- RSi(OH) з
- RзSi(OH)
Question’s Answer: RзSi(OH)
Which of the mentioned materials is helpful and used as refrigerant?
- CCI4
- PH3
- CF2
- CF2Cl2
Question’s Answer: CF2Cl2
The increasing order of oxidizing power in the following compounds is
- GeCl4 < SnCl4 < PbCl4
- SnCl4 < PbCl4 < GeCl4
- PbCl4 < SnCl4 < GeCl4
- GeCl4 < PbCl4 < SnCl4
Question’s Answer: GeCl4 < SnCl4 < PbCl4
What is the increasing sequence of reducing power in the following compounds?
- SnCl2 < PbCl2 < GeCl2
- GeCl2 < SnCl2 < PbCl2
- PbCl2 < SnCl2 < GeCl2
- GeCl2 < PbCl2 < SnCl2
Question’s Answer: PbCl2 < SnCl2 < GeCl2
Carbogen is ______.
- Pure form of carbon
- COCl2
- Mixture of CO and CO2
Question’s Answer: Mixture of oxygen and carbon dioxide
During the last two centuries, the atmospheric CO2 contents are increased by _____%.
- 13%
- 35%
- 25%
- 40%
Question’s Answer: 25%
The rising world temperature will have serious effect on
- Animal production
- Agriculture
- Human being
- All A, B, and C
Question’s Answer: All A, B, and C
Which of the mentioned lead oxide is helpful and used in lead storage battery?
- Pb3O4
- 2PbO PbO2
- PbO
- PbO2
Question’s Answer: PbO2
` Which of the mentioned is more electronegative element?
- Si
- C
- Pb
- Sn
Question’s Answer: C
Which is the allotropic form(s) of carbon?
- Fullerenes
- Graphite
- Diamond
- All A, B, and C
Question’s Answer: All A, B, and C
Which of the mentioned greenhouses gases are responsible for keeping our plant warm and sustaining life on the earth?
- CO2 & CFC
- COâ‚‚ & water vapors
- CO2 & N2O
- CO2 & CH4
Question’s Answer: CO₂ & water vapors
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