Qualitative analysis is carried out for _________________?
A. identification of elements
B. estimation of amounts of elements
C. molar ration of elements
D. molar volume of elements
Submitted by :- Jamil Ahmed
CHEMISTRY
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Which of the following statements is wrong about isotopes ?
A. they possess different mass number
B. they possess different physical properties
C. they possess same chemical properties
D. they possess different position in the periodic table
Submitted by :- Jamil Ahmed
Which of the following properties prove that cathode rays are material in nature_________________?
A. they cast shadow
B. they possess momentum
C. they are negatively charged
D. all of the above
Submitted by :- Jamil Ahmed
Paramagnetic behavior of substance is measured by a balance called___________________?
A. Analytical balance
B. Guoys balance
C. Electrical balance
D. Single beam balance
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Metallic crystals are soluble in________________?
A. Polar solvent
B. Non polar solvent
C. Fused metal
D. None
Submitted by :- Jamil Ahmed
Which of the following solids show anisotropy___________________?
A. Plastic
B. Glass
C. Rubber
D. None of the above
Submitted by :- Jamil Ahmed
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
Submitted by :- Jamil Ahmed
Which of the following theories is superior to others__________________?
A. VSEPR
B. VBT
C. MOT
D. none of the above
Submitted by :- Jamil Ahmed
Which of the solid does not contain covalent bond__________________?
A. copper
B. ice
C. diamond
D. graphite
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The hardest of the following solids is__________________?
A. sodium
B. diamond
C. graphite
D. magnesium
Submitted by :- Jamil Ahmed