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
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
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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