Higher Concentration Of Kankar Nodules Are Found In The __________.A) Red Soil. B) Khadar Soil. C) Bhangar Soil. D) Lateritic Soil
The correct answer is C) Bhangar Soil. Explore more such questions and answers at BYJU’S.
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What Is Known As Black Diamond
Coal is known as Black Diamond. This is because coal is used for a variety of purposes, such as: A... View Article
What Did Vishakhadatta Write?
Vishakhadatta wrote Mudra Rakshasa. The Mudrarakshasa is a historical play in Sanskrit by Vishakhadatta that narrates the ascent of king... View Article
Which Of The Following Are Efflorescent Substances? A. Na2CO3.10H2O.B. CuSO4.5H2O. C. K2SO4.Al2(SO4)3.24H2O D. Both A and B
The correct answer is D. Both A and B. Explore more such questions and answers at BYJU’S.
Explain Why The Angle Of Contact Of Mercury With Glass Is Obtuse , While That Of Water With Glass Is Acute
The angle of contact of mercury with glass is obtuse, while that of water with glass is acute because: The... View Article
In a constant volume calorimeter, 3.5 g of a gas with molecular weight 28 was burnt in excess oxygen at 298.0 K. The temperature of the calorimeter was found to increase from 298.0 K to 298.45 K due to the combustion process. Given that the heat capacity of the calorimeter is 2.5 kJ K−1 , the numerical value for the enthalpy of combustion of the gas in kJmol−1
In Excess Oxygen At 298.0 K. The Temperature Of The Calorimeter Was Found To Increase From 298.0 K To 298.45... View Article
A Round Uniform Body Of Radius R, Mass M And Moment Of Inertia I Rolls Down (Without Slipping) An Inclined Plane Making An Angle θ With The Horizontal. Then Its Acceleration Is
Sol: v = rw a =? \(\begin{array}{l} mgsin\Theta – F = ma —-[1] \end{array} \) \(\begin{array}{l} F(R) = I \alpha... View Article
Define Lattice Energy
Lattice energy can be defined as the energy required to convert one mole of an ionic solid into gaseous ionic... View Article
C12H22O11 + Conc H2So4 Rightarrow. The Products Of The Above Reaction Is/Are
The given reaction is \(\begin{array}{l}C_{12}H_{22}O_{11} + ConcH_{2}SO_{4} \rightarrow \end{array} \)___________ The product of the above reaction is Carbon Dioxide \(\begin{array}{l}(CO_{2})... View Article
A Body Is Projected With Velocity U So That Its Horizontal Range Is Twice The Greatest Height Attained. The Value Of Range Is
The initial velocity of the projectile be u Angle of projection = \(\begin{array}{l} \Theta \end{array} \) As given in the... View Article
A Monoatomic Gas At A Pressure P, Having A Volume V Expands Isothermally To A Volume 2V And Then Adiabatically To A Volume 16V. The Final Pressure Of The Gas Is : (Take γ=5/3)
Isothermal expansion =\(\begin{array}{l} PV = {P}'(2V) \end{array} \) For the isothermal process, PV = constant. Therefore, \(\begin{array}{l} {P}’ = \frac{P}{2}... View Article
A stone of mass 1 kg is tied up with an inextensible string of length l = 10/3 m. It is rotated in a vertical circle of l radius. If a ratio of maximum and minimum tension in the string is 4 and the value of g is 10m/s2 then calculate the speed of stone at the highest point of a circle.
Answer: Mass( m) = 1kg Length (l) = 10/3 m Radius (r) = 1m Ratio of tension is \(\begin{array}{l} \frac{T_{1}}{T_{2}} = 4... View Article
India Is Regarded As A Country With “Demographic Dividend”. This Is Due To _________.
Its high population in the age group of 15-64 years India is regarded as a country of “’Demographic Dividend”. This... View Article
The Maximum Height Reached By The Projectile Is 4M. The Horizontal Range Is 12M. Velocity Of Projection In M/S Is (G – Acceleration Due To Gravity)
In a projectile projected at angle θ maximum height and range is given by: \(\begin{array}{l} H_{max} = 4 = \frac{u^{2}... View Article
Which Of The Following Is A Biodegradable Pollutant? (A) Ddt (B) Mercury Salts (C) Aluminium Foil (D) Domestic Waste
The correct answer is (D) Domestic Wastes. Explore more such questions and answers at BYJU’S.
Two particles A and B of masses m and 2m have charges q and 2q, respectively. They are moving with velocities v1 and v2 , respectively, in the same direction, enters the same magnetic field, B acting normally to their direction of motion. If the two forces FA and FB acting on them are in the ratio of 1:2, find the ratio of their velocities.
Sol: We know that F = q V B Therefore as given in the question, \(\begin{array}{l} F_{A} = q V_{1}... View Article
A flat coil of 500 turns each of area 50 cm2 rotates in a uniform magnetic field of 0.14wb/m2 about an axis normal to the field at an angular speed of 150rad/s. The coil has a resistance of 5ω. the induced e.m.f. is applied to an external resistance of 10ω, the peak current through the resistance is:
Given: N = 500 R = \(\begin{array}{l} 10\Omega \end{array} \) B = 0.14 Wb \(\begin{array}{l} m^{-2} \end{array} \) \(\begin{array}{l} \omega... View Article
The Degree Of Hotness Or Coldness Of The Body Is Called ___________
The answer is Temperature. The degree of hotness and coldness of the body is called temperature. Explore more such questions... View Article
In the displacement method, a convex lens is placed in between an object and a screen.If the magnification in the two positions are, m1 and m2 (m1>m2) and the distance between the two positions of the lens is x, the focal length of the lens is
As we know in the displacement method, \(\begin{array}{l} m_{1} = \frac{v}{u} and m_{2} = \frac{u}{v} \end{array} \) Thus \(\begin{array}{l} m_{1}... View Article
A variable line L is drawn through o (0,0) to meet the lines L1:Y−x−10=0 And L2:Y−x−20=0 . At points A And B Respectively. A Point P is taken nn L such that 2/Op = 1/Oa + 1/Ob And P,A,B lies on same side of origin O. The locus of P is
\(\begin{array}{l} x = r cos \Theta \end{array} \) \(\begin{array}{l} y = r sin \Theta \end{array} \) Now, by substituting in... View Article
