If the ordered pairs (a + 2, 4) and (5, 2a + b) are equal then (a, b) is
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Match the following: Two bond pairs — i) trigonal planar without lone pair ,Three bond pairs — ii) linear without lone pair
B) a → ii, b → i, c → iii
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A molecule having 2 bond pairs and 2 lone pairs in the valence shell of its central atom.
Correct option is A) H2O
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if a convex lens has its ob j ect and image distance equal (say x) the focal length is equal to …………………
Correct option is B) x/2
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When the electrons are in ordered motion,there will be a net charge crossing through any cross-section of the conductor.
D) The positive ions of the metal conductor are in motion.
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Electric current is ordered motion of charges.
D) Electric current is random motion of free electrons in a conductor.
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A solid cylinder and a solid cone have equal base and equal height. If the radius and the height be in the ratio of 4 : 3
Let the radius of both solids be r and their heights be h units, According to condition, \(\frac{r}{h}=\frac{4}{3}\\\therefore h=\frac{3r}{4}\) TSA of cylinder = \(2\pi r(r+h)\) TSA of cone = \(\pi r (r+l)\) On comparing the ratios, \(=\frac {2\pi r...
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Identify the species having larger radius from the following pairs: i. Na and Na^+ ii. Na^+ and Mg^2+
i. The nuclear charge is the same in Na and Na+. But Na+ has a smaller number of electrons and a smaller number of occupied shells (two shells in Na+, while three shells in...
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If the ordered pairs (a+2,4) and(5,2a+b)are equal thaen (a,b) is
(a + 2, 4), (5, 2a + b) a + 2 = 5 a = 3 2a + b = 4 6 + b = 4 b = – 2
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Two angles of a quadrilateral are 89° and 113°. If the other two angles are equal; find the equal angles.
Let the other angle = x° According to given, 89° + 113° + x° + x° = 360° 2x° = 360° – 202° 2x° = 158° x° = (158/2)°=79° ∴other two angles = 79° each
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The wise judge then ordered the executioner to cut the baby into equal parts. (Passive)
The executioner was then ordered to cut the baby into two equal parts by the wise judge.
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