Question
Brimstone is easily burned without any extraneous help;
(A)/indeed the only precaution required is (B)/to take care lest the heat produced by (C)/the burning sulphur shall not volatilize (D)/part of it in the unburned state (E).Solution
When the subordinate clause comes after 'lest', the auxiliary Verb 'should' must be used, whatever be the Tense of the Verb in the main clause. So here, ‘shall’ is to be changed to ‘should’. Brimstone is easily burned without any extraneous help; indeed the only precaution required is to take care lest the heat produced by the burning sulphur should not volatilize part of it in the unburned state.
Statements:
All Letters are Alphabets
Only few Letters are Numbers
All Digits are Alphabets
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I. Some L...
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Some children are parents.
All parents are infants.
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Only a few Objectives are Solutions.
Only Subjective are Information.
A few Subjective are Solutions.
Conclusion...
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All ribbons are mat.
Some mats are ropes.
No rope is a thread.
All thread is a needle.
...
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No blue is black.
Only a few blacks are Whites.
All Whites are grey.
Conclusion:
I. No blue is Whites.
II. Some grey are not blues
Some tablets are medicines. Some syrups are not capsules. Some tablets are not syrups.
Statements: Some sweaters are coats.
      All coats are shawls. Â
Conclusions: I. Some sweaters are shawls.
   ...
Statements:
All Swabs are Handles.
Only a few Handles are Sticks.
All Sticks are Containers.
Conclusions:
I. Some Swabs are Sticks
II. No Swab is a Stick
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