Maths: If α be a root of the equation 4x² + 2x -1 = 0, then the other root of the equation is
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Vedantu JEE English
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22 hours ago • Vedantu JEE English
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1 day ago • Vedantu JEE English
Chemistry: In Victor Meyer's method 0.2 g of an organic substance displaced 56 mL of air at STP the molecular weight of the compound
A) 56
B) 112
C) 80
D) 28
725 votes
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1 day ago • Vedantu JEE English
Physics: The length of the rectangle is l = 15.2 cm and breadth is b = 2.9 cm and the minimum possible measurement by scale = 0.1 cm. Then, the area of the rectangle is (Taking significant figures into consideration)
A) 44.08 cm²
B) 24.8 cm²
C) 44 cm²
D) 94.008 cm²
1K votes
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1 day ago • Vedantu JEE English
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1 day ago • Vedantu JEE English
Maths: If log₇ 5 = a, log₅ 3 = b and log₃ 2 = c, then the logarithm of the number 70 to the base 225 is
A) 1 - a + abc / 2a ( 1 + b )
B) 1 - a - abc / 2a ( 1 + b )
C) 1 + a - abc / 2a ( 1 + b )
D) 1 + a + abc / 2a ( 1 + b )
892 votes
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2 days ago • Vedantu JEE English
A certain metal sulphide, MS₂, is used extensively as a high temperature lubricant. If MS₂ is 40.06% by mass sulphur, metal M has atomic mass.
A) 160 u
B) 64 u
C) 40 u
D) 96 u
1.4K votes
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2 days ago • Vedantu JEE English
Physics: If nth division of main scale coincides with ( n+ 1)^th division of vernier scale. The least count of the vermier is ( Given, one main scale division is equal to a units )
A) a + 1/n + 1
B) a/n
C) a / n + 1
D) a + 1/n
1.2K votes
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2 days ago • Vedantu JEE English
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2 days ago • Vedantu JEE English
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2 days ago (edited) • Vedantu JEE English
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