CHM205: Inorganic Chemistry Ii TMA2 Question and answer

CHM205: Inorganic Chemistry Ii TMA2

Instructions: Answer All .
After Submission, you will not be able to answer these questions

Question 1 : Ammonia functions as an electron donor because of __________.
A. The nitrogen atom being more electronegative than hydrogen draws the electron pair it shares with hydrogen to itself, and can therefore donate it
B. Lone pair of electron on the nitrogen atom available for donation
C. None of the above
D. All of the above

Answer to question 1 C. None of the above

Question 2 : The softest of the allotropes of carbon is ____________.
A. Diamond
B. Quartz
C. Silicone
D. Graphite

Answer to question 2 is D. graphite

Question 3 : Nitrogen react with metals of low ionisation energy because of ________.
A. Its small size and high electronegativity
B. It is a gaseous compound
C. It has not attained the octet configuration
D. Its atoms are linked by triple bonds, making them unreactive except with atoms of low ionisation energies

If need answer to question 3 drop a comment on this post.

Question 4 : Fluorocarbons are resistant to attack by acids, alkalis, oxidizing and reducing agents because of__________.
A. The stability of the C-F bond
B. The large size of fluorine
C. The greater strenght of the C-F bond and the large size of fluorine
D. Ability of the compounds to catenate

Answer to question 4 is A. The stability of the C-F bond

Question 5 : Al4C3 is an example of ____________.
A. Carboxylate
B. Carboxyl
C. Carbene
D. Carbide

Answer to question 5 is D. Carbide

Question 6 : The product obtained when steam is passed over red hot coke is ___________.
A. CH4
B. CH3COOH
C. CH2OH
D. CO

Answer to question 6 is D. CO

Question 7 : Which of the following have high small size and high electronegativity?
A. Bismuth
B. Nitrogen
C. Antimony
D. Arsenic

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Answer to question 6 is B. Nitrogen

Question 8 : Which of the following is capable of forming comparatively stable multiple bonds?
A. Tin
B. Lead
C. Carbon
D. Silicon

Answer to question 8 C. carbon

Question 9 : Which of the following statement is true?
A. Carbonmonoxide has no dipole moment
B. Carbonmonoxide is an example of a carbene
C. In carbonmonoxide, oxygen forms a coordinate bond with C by donating and sharing its lone pair of electrons
D. Carbonmonoxide is formed by acceptance of electrons from carbon by oxygen atom

Answer to question 9 is C. In carbonmonoxide, oxygen forms a coordinate bond with C by donating and sharing its lone pair of electrons

Question 10 : _____ is the main types of halides formed by Group 5 elements.
A. Trihalides
B. Dihalides
C. Pentahalides
.D Tetrahalides

Answer to question 10 is C. Pentahalides

Question 11 : Coke and charcoal are formed by ___________.
A. None of the above
B. Destructive distillation of coal and hardwood or bones in the absence of air
C. All of the above
D. Pyrolysis of coal and hardwood or bones in the absence of air

Answer to question 11 is C. All of the above

Question 12 : Nitrogen is quite inert at room temperature because of ________.
A. Multiple bonds between its atoms
B. It has only one oxidation state
C. It exist in molecular form
D. The electrons are strongly attracted to the positive nucleus due to Its small size, hence its difficult to lose electron

Answer to question 12 is D. The electrons are strongly attracted to the positive nucleus due to Its small size, hence its difficult to lose electron

Question 13 : What is the reason why nitrogen is not able to form coordination number beyond four, whereas other members of its group is able?
A. Nitrogen can form sp3d hydrisation whereas others can form sp3d2 hybridisation
B. P, As, Sb and Bi can attain sp3d2 hydridisation whereas nitrogen cannot
C. P, As, Sb and Bi can attain sp3d and sp3d2 hydridisation whereas nitrogen cannot
D. P, As, Sb and Bi can attain sp3d hydridisation whereas nitrogen cannot

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Answer to question 13 is A. Nitrogen can form sp3d hydrisation whereas others can form sp3d2 hybridisation

Question 14 : Hydrazine has how many lone pairs of electrons?
A. Two
B. Three
C. None
D. One

Need answer to this? Comment on the the answer wil be made available

Question 15 : ________________ is used to create inert atmosphere where the presence of air would involve fire explosion, hazards or undesirable oxidation products.
A. Arsenic
B. Silica
C. Bismuth
.D Nitrogen

Answer to question 15 is D Nitrogen

Question 16 : Among Group 5 elements, increase in atomic number leads to increase in ________.
A. Stability
B. Reactivity
C. Ionic constant
D. Atomic radii

Answer to question 16 is D. Atomic radii

Question 17 : Diamond are used in jewellery on account of their ______.
A. High refractive index and dispersive power
B. Crystalline nature
C. Hard structure
D. High purity

Answer to question 17 is A. High refractive index and dispersive power
Question 18 : Nitrogen is obtained commercially from ___________.
A. Reduction of proteinous compounds
B. Fractional distillation of liquid air
C. Hydrolysis of proteineous compounds
D. Haber process

Answer to question 18 is D. Haber process

 

Question 19 : The forms of carbon include _________.
A. Coke and charcoal
B. Charcoal and carbon black
A. Coke and carbon black
D. Coke, charcoal and carbon black

Answer to question 19 is D.  Coke, charcoal and carbon black

 

Question 20 : Group 5 elements form compounds mainly in two oxidation states, namely ____________.
A. +3 and +2
B. +3 and +6
C. +3 and +5
D. +2 and +5

Answer to question 19 is B. +3 and +6

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