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Aakriti Gupta 6 years, 8 months ago

The unit cell in which atoms are present at corners as well as the body centre.

ANSWER

A wire of 10ohm resistance is streached to three its original length what will be its new resistivity or resistance

Posted by Naveen Kumar 6 years, 8 months ago

CBSE > Class 12 > Physics

1 answers

Shrutika Prasad 6 years, 8 months ago

Resistivity same resistance 9 times

ANSWER

One marks questions answers

Posted by K J 6 years, 8 months ago

CBSE > Class 12 > भूगोल

1 answers

K J 6 years, 8 months ago

One marks questions answers

ANSWER

What are list type control used for

Posted by Narayan Rajwade 6 years, 8 months ago

CBSE > Class 12 > Informatics Practices

1 answers

Sia ? 6 years, 8 months ago

The List control type provides a way to organize a flat group or groups of items and allows a user to select one or more of those items.

ANSWER

c) Comment on the changes that comes over Franz after he heard the orders from Berlin.

Posted by Riya Gaba 6 years, 8 months ago

CBSE > Class 12 > English Core

0 answers

ANSWER

Carboxylic acid are weaker than mineral acid but are stronger acid than alcohol and phenol

Posted by Rashi Srivastava 6 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

1 -bromopentane to 2-bromopentane

Posted by Samar Sharma 6 years, 8 months ago

CBSE > Class 12 > Chemistry

2 answers

Riya Singh 6 years, 8 months ago

Dehydrohalogenation of 1 bromopentane and then reaction with HBr in absence of peroxide.

Abhishek Kumar 6 years, 8 months ago

What is ur questions

ANSWER

Ch 1 solid state syllabus m hai ke nhi h....

Posted by Patel Kumkum 6 years, 8 months ago

CBSE > Class 12 > Chemistry

6 answers

Srishti Choudhary ✍⏳ 6 years, 8 months ago

Ya...mahesh is right...tumne count kiya....??

꧁≪Mämƭå ℭℏ۝ᑌĎℎàℜÿ? 6 years, 8 months ago

Yeh question 13th time puccha gaya hai....yeh syllabus mein nahi hai

Nishu Sahu 6 years, 8 months ago

Nhi

K@Łp@N@ $Øđh!?? 6 years, 8 months ago

Nhi h lakin competitive exam ke liye important chapter h ye

Bharat Punetha 6 years, 8 months ago

Agar Aap JEE Ya competitive exam kids tayari kr rhe Ho to It's an important chapter for that one

Azmat Khan 6 years, 8 months ago

Nhi

ANSWER

? the electric potential is constant in a region what will be the electric field there

Posted by Dancer Bk Kumawat 6 years, 8 months ago

CBSE > Class 12 > Physics

2 answers

Nishu Sahu 6 years, 8 months ago

Zero

Shrutika Prasad 6 years, 8 months ago

Zero

ANSWER

Jeevan Baaton ka re Haal ka varnan

Posted by Sonal Yadav 6 years, 8 months ago

CBSE > Class 12 > इतिहास

0 answers

ANSWER

Difference between prokaryotic and eukaryotic

Posted by Pratik Sahoo 6 years, 8 months ago

CBSE > Class 12 > Biology

1 answers

Yogita Ingle 6 years, 8 months ago

	Prokaryotes	Eukaryotes
Type of Cell	Always unicellular	Unicellular and multi-cellular
Cell size	Ranges in size from 0.2 μm – 2.0 μm in diameter	Size ranges from 10 μm – 100 μm in diameter
Cell wall	Usually present; chemically complex in nature	When present, chemically simple in nature
Nucleus	Absent	Present
Ribosomes	Present. Smaller in size and spherical in shape	Present. Comparatively larger in size and linear in shape
DNA arrangement	Circular	Linear
Mitochondria	Absent	Present
Cytoplasm	Present, but cell organelles absent	Present, cell organelles present
Endoplasmic reticulum	Absent	Present
Plasmids	Present	Very rarely found in eukaryotes
Ribosome	Small ribosomes	Large ribosomes

ANSWER

What is the effect of temperature on dielectric constant

Posted by Prabhjot Singh 6 years, 8 months ago

CBSE > Class 12 > Physics

1 answers

Shivam Chaurasia 6 years, 8 months ago

Inversly to temperaruee

ANSWER

Define mobility of electron in a conductor??

Posted by Aaaaaaaa Bbbbbbbbb 6 years, 8 months ago

CBSE > Class 12 > Physics

2 answers

Nishu Sahu 6 years, 8 months ago

Mobility of e- is ratio of drift velocity and electric field

Shrutika Prasad 6 years, 8 months ago

Drift vel by E

ANSWER

Name the organism From where the thermostable DNA Polymerase is isolated. States its role in genetic engineering

Posted by Aaaaaaaa Bbbbbbbbb 6 years, 8 months ago

CBSE > Class 12 > Biology

1 answers

Rani Jojo Jojo 6 years, 8 months ago

Thermus aquatics .used in PCR STEP

ANSWER

The vapour pressure of a non-volatile solute is less than that of a pure solvent. Give reasons.

Posted by Prerna Sikdar 6 years, 8 months ago

CBSE > Class 12 > Chemistry

2 answers

Nishu Sahu 6 years, 8 months ago

On adding non volatile solute the v.p. decrease because the surface area of solvent decrease due to presence of solute on the surface.So less molecules get vaporise and exert less pressure than the pure solvent.

Riya Singh 6 years, 8 months ago

Because the vapours of solvent will collide with the particles of the non volatile solute

ANSWER

Why Fe(OH)3 is positive sol. When FeCl3 added in it.

Posted by K@Łp@N@ $Øđh!?? 6 years, 8 months ago

CBSE > Class 12 > Chemistry

2 answers

Riya Singh 6 years, 8 months ago

Because Fe³+ion will adsorb on the surface of the sol

Shrutika Prasad 6 years, 8 months ago

Cause of Fe +3 ions surrounding it

ANSWER

Comment on the end of the story "Third level".

Posted by Tisha Simaria 6 years, 8 months ago

CBSE > Class 12 > English Core

0 answers

ANSWER

amino acid

Posted by Akshat Chandel 6 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

K@Łp@N@ $Øđh!?? 6 years, 8 months ago

Amino acids are organic compounds containing amine and carboxyl functional groups, along with a side chain specific to each amino acid. The key elements of an amino acid are carbon, hydrogen, oxygen, and nitrogen, although other elements are found in the side chains of certain amino acids.

ANSWER

A patient of high blood sugar is advised not to eat extra salt. Give reasons.

Posted by Prerna Sikdar 6 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 6 years, 8 months ago

Osmotic pressure is directly proportional to the concentration of the solutes. Our body fluid contains a number of solutes. On taking large amount of common salt, Na⁺ and Cl^- ions enter into the body fluid thereby raising the concentration of solutes. As a result, osmotic pressure increases which may rupture of blood cells.

ANSWER

Metals are not usually found in nitrate as ore explain?

Posted by K@Łp@N@ $Øđh!?? 6 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

ANSWER

How can you separate silica from Alumina in Bauxite ore associated with silica?

Posted by K@Łp@N@ $Øđh!?? 6 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Sia ? 6 years, 8 months ago

To separate alumina from silica in bauxite ore associated with silica, first the powdered ore is digested with a concentrated NaOH solution at 473 - 523 K and 35 - 36 bar pressure. This results in the leaching out of alumina {tex}\left( {A{l_2}{O_3}} \right){/tex} as sodium aluminate and silica {tex}\left( {Si{O_2}} \right){/tex} as sodium silicate leaving the impurities behind.

{tex}\mathop {A{l_2}{O_{3(s)}}}\limits_{Alu\min a} + 2NaO{H_{(aq)}} + 3{H_2}{O_{(l)}} \to \mathop {2Na{{\left[ {Al{{\left( {OH} \right)}_4}} \right]}_{(aq)}}}\limits_{Sodium\,\,alu\min ate}{/tex}
{tex}\mathop {Si{O_2}}\limits_{Silica} + 2NaO{H_{(aq)}} \to \mathop {N{a_2}Si{O_{3(aq)}}}\limits_{Sodium\,\,silicate} + {H_2}{O_{(l)}}{/tex}

Then, {tex}C{O_2}{/tex} gas is passed through the resulting solution to neutralize the aluminate in the solution, which results in the precipitation of hydrated alumina. To induce precipitation, the solution is seeded with freshly prepared samples of hydrated alumina.

{tex}\mathop {2Na{{\left[ {Al{{\left( {OH} \right)}_4}} \right]}_{(aq)}}}\limits_{Sodium\,\,alu\min ate} + C{O_{2(g)}} \to \mathop {A{l_2}{O_3}.x{H_2}{O_{(s)}}}\limits_{Hydrate\,\,alu\min a} + \mathop {2NaHC{O_{3(aq)}}}\limits_{Sodium\,\,hydrogen\,\,carbonate}{/tex}

During this process, sodium silicate remains in the solution. The obtained hydrated alumina is filtered, dried, and heated to get back pure alumina.

{tex}\mathop {A{l_2}{O_3}.x{H_2}{O_{(s)}}}\limits_{Hydrated\,\,alu\min a} \xrightarrow{{1470K}}\mathop {A{l_2}{O_{3(s)}}}\limits_{Alu\min a} + x{H_2}{O_{(g)}}{/tex}

ANSWER

What is carcinogen

Posted by Ritik Limba 6 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

K@Łp@N@ $Øđh!?? 6 years, 8 months ago

A carcinogen is any substance, radionuclide, or radiation that promotes carcinogenesis, the formation of cancer. This may be due to the ability to damage the genome or to the disruption of cellular metabolic processes. ... There are many natural carcinogens.