Everyday Science MCQs

5120 MCQs  (Page 170 of 512)

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Which is true about Zn-Cu galvanic cell ?
A. Reduction occurs at anode
B. K+ ion transfer from salt bridge to left beaker of znso4
C. Oxidation occurs at cathode
D. Anode is negatively charged
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Nitrates of which pair gives different products on thermal decomposition___________________?
A. Na k
B. Mg ca
C. Li na
D. Li ca
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Keeping in view the size of atom which is in correct order___________________?
A. Mg > sr
B. Ba > mg
C. Lu > ce
D. Ci > 1
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Which one is not the use of silicones________________________?
A. Lubricant
B. Water repellent film
C. Rubber sheet
D. Medicine
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Chemical composition of cinnabar is____________________?
A. Fes2
B. Hgs
C. Pbs
D. Zns
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When chlorine is passed through hot solution of caustic soda the reaction is said as___________________?
A. Displacement
B. Reduction
C. Disproportionation reaction
D. Double displacement reaction
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In the complex [Cr(OH)3(H2O)3] the coordination number is __________________?
A. 2
B. 3
C. 4
D. 6
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A great variety of the organic compounds is due to its property of carbon_________________?
A. Show tetravalency
B. Exhibit catenation
C. Show isomerism
D. Can form multiple bonds
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Vinyl acetylene combines with hydrochloric acid produces___________________?
A. Diviny1 acetylene
B. Ethylidine dichloride
C. Chloroprene
D. 1 – 3 – 3 – trichloro butane
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When toluene reacts with chlorine in sunlight the first major product is__________________?
A. Benzy1 chloride
B. Benzal dichloride
C. O-chlorotoluene
D. O-chlorotoluene and p-chlorotoluene
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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