Recent questions in maharashtra state board

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1 answer 3.7k views

Calculate the molecular mass of the following in u. a. NH3 b. CH3 COOH c. C2 H5 OH

asked Apr 20, 2021 in Chapter 1: Some Basic Concepts of Chemistry by Doubtly (98.9k points)

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1 answer 1.3k views

How many grams does an atom of hydrogen weigh ?

asked Apr 20, 2021 in Chapter 1: Some Basic Concepts of Chemistry by Doubtly (98.9k points)

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1 answer 2.6k views

Point out the difference between 12 g of carbon and 12 u of carbon

asked Apr 20, 2021 in Chapter 1: Some Basic Concepts of Chemistry by Doubtly (98.9k points)

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1 answer 1.6k views

A. State and explain Avogadro's law.

asked Apr 20, 2021 in Chapter 1: Some Basic Concepts of Chemistry by Doubtly (98.9k points)

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1 answer 610 views

1. Choose the most correct option A sample of pure water, whatever the source always contains

asked Apr 20, 2021 in Chapter 1: Some Basic Concepts of Chemistry by Doubtly (98.9k points)

+2 votes

1 answer 1.4k views

Explain with diagram the boiling point elevation in terms of vapour pressure lowering ?

asked Apr 14, 2021 in Chapter1:Rotational Dynamics by anonymous

+1 vote

1 answer 168 views

What is osmotic pressure ? Chemistry 12th

asked Apr 14, 2021 in Chapter1:Rotational Dynamics by anonymous

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1 answer 196 views

A gas contained in a cylinder fitted with a frictionless piston expands against a constant external pressure of 1 atm

asked Apr 13, 2021 in Chapter1:Rotational Dynamics by anonymous

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1 answer 564 views

If A and B are two skew-symmetric matrices of order n, then, (a) AB is a skew-symmetric matrix

asked Apr 12, 2021 in Chapter1:Rotational Dynamics by Topper11 (2.8k points)

+2 votes

1 answer 2.8k views

[MCQ ] Molecular solids are __________ crystalline solids amorphous solids

asked Apr 10, 2021 in Chapter1:Rotational Dynamics by anonymous

+3 votes

1 answer 12.4k views

Niobium forms bcc structure the density of niobium is 8.55 g/cm3 and length of unit cell edge

asked Apr 10, 2021 in Chapter1:Rotational Dynamics by anonymous

+2 votes

1 answer 420 views

Alluminium crystallizes in cubic close packed structure with unit cell edge 353.6 pm

asked Apr 10, 2021 in Chapter1:Rotational Dynamics by anonymous

+3 votes

1 answer 4.8k views

The density of iridium is 22.4 g/cm3 . The unit cell of iridium is fcc. Calculate the radius of iridium atom. Molar mass of iridium is 192.2 g/mol.

asked Apr 10, 2021 in Chapter1:Rotational Dynamics by anonymous

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1 answer 388 views

If the cost of bananas is increased by Rs. 10 per dozen, one can get 3 dozen less for Rs.600.