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Cow milk, an example of natural emulsion, is stabilized by:
1.  Fat
2.  Water
3.  Casein
4.  Mg2+ ions

 

 64%
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for a zero-order reaction:

 

 68%
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The extraction of which of the following metals involves bessemerisation?
 

1.  Fe
2.  Ag
3.  AI
4.  Cu

 57%
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The correct order of decreasing first ionization energy is:


1.  C > B > Be > Li
2.  C > Be > B > Li
3.  B > C > Be > Li
4.  Be > Li > B > C

Subtopic:  Ionization Energy (IE) |
 71%
From NCERT
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Consider the following reaction, 
 
What is Y?
 
1.  Acetanilide
2.  Benzinilide
3.  Azobenzene
4.  Hydrazobenzene

 

 53%
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An example of natural biopolymer is:
1.  Teflon
2.  nylon-66
3.  Rubber
4.  DNA

 61%
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Which of the following is known as inverted soap?

1.  Pentaerythritol monostearate
2.  Sodium stearyl sulphate
3.  Trimethyl stearyl ammonium bromide
4.  Ethoxylated nonylphenol

 59%
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Le-blanc process manufacture of:
1.  Baking soda
2.  Washing soda
3.  Potash
4.  Plaster of Paris

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Which one of these is not true for benzene?
1. It forms only one type of monosubstituted product
2. There are three carbon-carbon single bonds and three carbon-carbon double bonds
3. The heat of hydrogenation of benzene is less than its theoretical value
4. The bond angle between carbon-carbon bonds is 120°
 51%
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