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BCl3 Does Not Exist As Dimer But BH3 Exists As Dimer (B2H6). Explain Why?

BCl3 does not exist as a dimer, but BH3 exists as dimer B2H6 because, large-sized chlorine atoms do not fit between the small boron atoms,... View Article

The Unit Of Reduction Factor Of Tangent Galvanometer: (A) Gauss. (B) Ampere. (C) Radian. (D) None Of These.

The correct answer is (B) Ampere. Explore more such questions and answers at BYJU’S.... View Article

Solve (cot A – 1) / (2 – sec2 A) = (cot A) / (1 + tan A)

Sol: Given: L.H.S = Hence it is proved. Explore more such questions and answers at BYJU’S.... View Article

In A Deck Of Card Find The Probability Of Getting A Spade.

There are four suits in a pack of 52 cards. 13− Heart 13− Diamond 13− Spades 13− Clubs Each suite has one ace, one jack, one king, one... View Article

Explain Asexual Reproduction In Unicellular And Multicellular Organisms

Asexual Reproduction In Unicellular Organisms: During asexual reproduction in unicellular organisms, the parent divides to give rise to two... View Article

Each Of The Two Platinum Electrodes Having Area 64 Mm2 Of A Conductivity Cell Are Separated By 8 Mm. The Resistance Of The Cell Containing 7.5×10 −3m Kcl Solution At 298 K Is 1250 Ohm. Calculate (I) Cell Constant, (II) Conductivity And (III) Molar Conductivity.

Sol: Given: Area = 64 mm2 = 0.64 sq.cm Distance = 8mm = 0.8 cm Resistance = 1250 Ω Concentration =7.5×10−3 M (i) Cell... View Article

The Amazon River Basin Lies Between The _________________. (A) Guiana Highlands And Andes Mountains.(B) The Guiana Highlands And The Patagonian Plateau. (C) The Guiana Highlands And The Brazilian Highlands. (D) Brazilian Highlands And The Patagonian Plateau.

The correct answer is (C) Guiana highlands and the Brazilian highlands. The Amazon River basin stretches from the Brazilian Highlands in the... View Article

The Average Thickness Of The Crust Is Km Below The Continent And __ Km Below The Ocean. (A) 10 and 50.(B) 35 and 6.(C) 30 and 90.(D) 80 and 60.

The correct answer is (B) 35 and 6. The average thickness of the crust is 35 km below the continent and 6km below the ocean. Explore more such... View Article

Taj Mahal Is On The Banks Of_______.(A) Sind.(B) Tapti.(C) Ganges.(D) Yamuna.

The correct answer is (D) Yamuna. The Taj Mahal was built on the banks of the river Yamuna by the Mughal emperor Shah Jahan between 1631 and... View Article

The Position-Time Graph Of A Uniform Motion In One Dimension Of A Body Can Have A Negative Slope. (True/False)

The given statement is true. The negative slope of the position-time graph represents that the body is moving towards the negative direction.... View Article

What Is Decalcified Bone?

Decalcified bone is a bone with organic matter. Bone decalcification removes calcium ions from the bone through a histological process, thereby... View Article

A Transformer Works On The Principle Of (A) Lenz’s Law. (B) Ampere Law. (C) Self Induction. (D) Mutual Induction.

The correct answer is (D) Mutual Induction. Explore more such questions and answers at BYJU’S.... View Article

XeF2 Is Linear With Two Lone Pairs of Ofelectrons On Equatorial Position (TRUE/FALSE)

The given statement is true. In XeF2, there are five pairs of electrons around Xe and thus, its geometry is trigonal bipyramidal. The fluorine... View Article

What Are The Steps Involved In The Process Of Planning?

The different steps involved in the process of planning are: Goal setting Developing the planning premises Reviewing Limitations Deciding... View Article

If The Circumference Of Base Of A Hemisphere Is 2Pi Then What Will Be Its Volume?

The circumference of the base of a hemisphere = 2π Therefore, 2πr = 2π r = 1 Its volume = Explore more such questions and answers... View Article

Which Of The Following Is Not A Perfect Square? (A) 11025. (B) 16384. (C) 18496. (D) 23857.

The correct answer is (D) 23857. 23857 is a prime number and not a perfect square. (A) 11025 = 105 * 105. It is a perfect square. (B) 16384 =... View Article

Show That (a-b)2, (a2 +b 2) and (a+b)2 Are In A.P.

Sol: Given: (a-b)2, (a2+b2) and (a+b)2 The common differences, d1 ⇒ (a2 + b2) - (a - b)2 ⇒(a2 + b2) - (a2 + b2 - 2ab) ⇒ a2 + b2 - a2 - b2 +... View Article

All Parallelograms Are Rectangles. ( True Or False)

The given statement is false. All rectangles are parallelograms, but all parallelograms are not rectangles. Explore more such questions and... View Article

The Assimilatory Power In Photosynthesis Is (A) CO2. (B) ATP. (C) NADPH. (D) ATP and NADPH2.

The correct answer is (D) ATP and NADPH2. The assimilatory power in photosynthesis is ATP and NADPH2, and they are generated with the evolution... View Article

The Largest Cone Is Curved Out From One Face Of Solid Cube Of Side 21cm. Find The Volume Of The Remaining Solid.

Sol: Let the maximum volume of the cone that can be carved will be of radius = 0.5 side length of cube. Radius, R = 0.5L = 0.5 * 21 = 10.5 cm... View Article