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Find The Total Number Of Protons In 10 G Of Calcium Carbonate.

Protons are the positively charged particles that are present in the nucleus of a hydrogen atom. An atom is composed... View Article

What Is The Stability Order Of Carbocation?

The observed order of stability for carbocations is as follows: tertiary > secondary > primary > methyl. Explore more such... View Article

Two Particles Each Of Mass M And Charge Q Are Attached To The Two Ends Of A Light Rigid Rod Of Length 2r. The Rod Is Rotated At Constant Angular Speed About A Perpendicular Axis Passing Through Its Centre. The Ratio Of The Magnitudes Of The Magnetic Moment Of The System And Its Angular Momentum About The Centre Of The Rod Is.

Sol: Let the angular speed be ω. Thus the current due to the rotation of charges in circular path =... View Article

Name The Reagent That Is Used In The Leaching Gold. (A) Carbon.(B) Iodine.(C) Sodium Cyanide. (D) Carbon Monoxide.

The correct answer is (C) Sodium cyanide. Most of the cyanides are used as reagents for mineral processing. Sodium cyanide... View Article

Fossil Fuels Are Rich In Carbon And______.(A) Oxygen.(B) Sulphur.(C) Nitrogen.(D) Hydrogen.

The correct answer is (D) Hydrogen. Fossils fuels include petroleum, coal, and natural gas and are rich in carbon and... View Article

An Atom Has X Energy Level Then The Total Number Lines In Its Spectrum Are___.(A) 1 + 2 + 3…..(X2). (B) 1 + 2 + 3…..(X + 1). (C) 1 + 2 + 3…..(X – 1). (D) (X – 1)(X – 2)(X – 3)(X – 4).

The correct answer is (C) 1 + 2 + 3…..(x – 1). An atom has x energy level, then a... View Article

Write The Following Sets:

Sol: (1) Set of first five cubic numbers. The set of first five cubic numbers is {1,8,27,64,125} (2) Set of... View Article

What Is Mixture?

Answer: A mixture is defined as a substance formed by combining two or more substances that are not chemically combined... View Article

Why Is A Fuse Always Connected In The Live Wire Of The Circuit?

A fuse is always connected to the live wire to break the circuit preventing the connected devices from damage. A... View Article

In The Visible Region, The Dispersive Powers And The Mean Angular Deviations For Crown Glass And Flint Glass Prism Are Omega, Omega1 And D, D1 Respectively. The Condition For Getting Dispersion With Zero Deviation When The Two Prisms Are Combined Is

Given: Dispersive power – ω, ω’ Mean deviation – d, d’ Dispersive power, \(\begin{array}{l}\omega = \frac{angular dispersion}{mean deviation}\end{array} \) ⇒... View Article

What Is The Value Of 1% Of 1% Of 25% Of 1000?

Sol: The value of 1% of 1% of 25% of 1000 is ⇒ 1% of 1% of\(\begin{array}{l} [(\frac{25 * 1000}{100})]\end{array} \)... View Article

A Ball Of Radius R Carries A Positive Charge Whose Volume Density Depends Only On A Separation R From The Ball’s Centre As Ρ=Ρ 0(1−r/R), Where Ρ0 Is A Constant. Assuming The Permittivities Of The Ball And The Environment To Be Equal To Unity, Find The Following:

Sol: (A) The Magnitude Of The Electric Field Strength As A Function Of The Distance R Both Inside And Outside... View Article

Give Geographical Reasons For The Following Statement: Settlements Are Sparse In Northeastern Brazil.

Settlements are sparse in North-eastern Brazil because settlement in an area depends upon many factors, including the climate, land patterns,... View Article

A Vertical U-Tube Of Uniform Cross-Section Contains Mercury On Both Sides Of Its Arms. Glycerin Column Of 10 Cm Is Introduced Into One Of Its Arms. Oil Of Density 0.8 G/Cc Is Poured Into The Other Arm Until The Upper Surface Of The Oil And Glycerin Are At The Same Horizontal Level. Find The Length Of The Oil Column.[Ρhg = 13.6 G/Cc, Ρglycerin = 1.3 G/Cc]

Sol: Given: ρHg = 13.6 g/cc ρglycerin = 1.3 g/cc Oil of density 0.8 g/cc Glycerin column of 10 cm... View Article

The Lengths Of Steel And Copper Rods Are So That The Length Of The Steel Rod Is 5 Cm Longer Than That Of The Copper Rod At All Temperatures. What Will Be The Length Of Each Rod?

Sol: Let Ls and Lc be the lengths of the steel and copper rods. Let αs and αc be the... View Article

Hemoglobin Contains 0.25% Iron By Mass. The Molecular Mass Of Hemoglobin Is 89600. Calculate The Number Of Iron Atoms Per Molecule Of Hemoglobin.[Atomic Mass Of Fe = 56]

Percentage of iron=0.25% If 100 gm of haemoglobin has 0.25gm of iron. then 89600 have: \(\begin{array}{l}\Rightarrow 89600 * \frac{0.25}{100} \\\Rightarrow... View Article

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