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.Management Sciences
Category: Chemistry Basic Concept
Regular coiling or zigzagging of polypeptide through hydrogen bonding is its___________________?
A. Quantum structure
B. Secondary structure
C. Tertiary structure
D. Primary structure
Fruit juices and fizzy drinks such as lemonade are often sold in aluminium cans. What is the most important reason aluminium is a suitable metal ?
A. aluminium can be recycled
B. aluminium has very low density
C. aluminium is the most abundant metal in the earth crust
D. aluminium is resistant to corrosion by organic acids.
Which one of the following has the maximum number of isotopes ?
A. oxygen
B. carbon
C. tin
D. chlorine
A solution can be both____________________?
A. dilute and concentrated
B. dilute and saturated
C. saturated and unsaturated
D. saturated and super saturated
moles of each aluminium and oxygen react with each other to produce aluminium oxide. The amount of product formed is______________________?
A. 0.18 mole
B. 0.27 mole
C. 0.24 mole
D. 0.09 mole
Which of the following elements react with steam to produce H2 gas?
A. Pd
B. Ni
C. Sn
D. All of the above
For which of the following compounds the term empirical formula cannot be applied ?
A. NaCl
B. H2O
C. CCI4
D. It can be applied to all mentioned above
At which electrode the reduction of the solution is occurring in Al-Ag cell_____________?
A. A
B. Ag
C. Both
D. Neither
Which of the following is not characteristics of reversible reaction__________________?
A. whole amount of reactant does not change into product
B. chemical equilibrium is established
C. a catalyst changes the direction of reaction
D. rate of forward reaction decreases as reaction proceeds
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