Archives

What Is Schiffs Reagent

The Schiff test is the chemical test used to check for the presence of aldehydes in a given analyte. This qualitative test is mainly performed by... View Article

Explain The Main Merits And Demerits Of Mixed Economy

The mixed economy is an economic system in which both the state and private sector direct the economy, reflecting characteristics of both market... View Article

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.... View Article

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 source of fuel in the kitchen As a raw... 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.... View Article

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 adhesive force between the molecules... 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 K Due To The Combustion Process.... 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 =? Therefore, Therefore, Therefore, its acceleration is Explore more such questions and answers at... 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 constituents. Explore more such... View Article

C12H22O11 + Conc H2So4 Rightarrow. The Products Of The Above Reaction Is/Are

The given reaction is ___________ The product of the above reaction is Carbon Dioxide The complete reaction is Explore more such questions... 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 = As given in the question, R = 2H Range - R = R = R =... 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 = For the isothermal process, PV = constant. Therefore, According to adiabatic expansion For adiabatic process,... 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 . . Here is maximium tension is minimum... 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 is due to its... 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: Now, by dividing equation (2) by equation (1), we get:... 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.... View Article

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, Here Therefore, The ratio of their velocities = 1:1... 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 = B = 0.14 Wb Find out We have to determine the peak current through the resistance Solution The Peak... 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 and answers at... View Article

M	T	W	T	F	S	S
			1	2	3	4
5	6	7	8	9	10	11
12	13	14	15	16	17	18
19	20	21	22	23	24	25
26	27	28	29	30	31