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Ankit Singh 6 years, 11 months ago

????

Ankit Singh 6 years, 11 months ago

R×F = TORQUE

???. Pragati 6 years, 11 months ago

RF??

4Thank You

ANSWER

Find a positive value of m for which the coefficient of( x)²in the expansion (1+x)m is 6

Posted by Saurabh Pal 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Sivan Karthick 6 years, 11 months ago

x2 term is mc2.1m-2. x2 we know 1 power anything is 1 so mc2=6 m.(m-1)/2=6 m2-m-12=0 (m-4)(m+3)=0 m=4,-3 since m is positive so m=4

ANSWER

Is boric acid a protic acid???

Posted by ???. Pragati 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Yogita Ingle 6 years, 11 months ago

A protic acid is one which can ionise in solution to produce proton or hydronium ion. It is not protic acids since it does not ionise in H₂O to give a proton.
Boric acid is not a protic acid. It accepts a pair of electron from OH^- ion of water and acts as a lewis acid
B(OH)₃ +2H₂0 →[B(OH)₄]^-+H₃O⁺

Ankit Singh 6 years, 11 months ago

According to their theories , a protonic acid is a species which donate a proton i.e. ... But boric acid do not donate H+ rather it accepts an electron pair from the solution or the donor i.e. an OH-.

ANSWER

How can you explain higher stability of Bcl3 as compared to TLcl3??

Posted by ???. Pragati 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Vaibhav Kumar Gupta 6 years, 11 months ago

Because both boron and chlorine are of small size and also of comparable size with each other , hence due to almost comparable size bond formed is more stable , as compared to bond foed between Thallium and chlorine where size/radius difference is more, hence in case of thallium weaker bond is formeand less stable.

Ankit Singh 6 years, 11 months ago

bcl3 is stable while ticl3 is unstable . Boron and thallium belong to group 13 of the periodic table. In this group, the +1 oxidation state becomes more stable on moving down the group. BCl 3 is more stable than TlCl 3 because the +3 oxidation state of B is more stable than the +3 oxidation state of Tl. Please confirm that my answer is correct .......

ANSWER

Name the constituents of water gas??

Posted by ???. Pragati 6 years, 11 months ago

CBSE > Class 11 > Chemistry

4 answers

Yogita Ingle 6 years, 11 months ago

Water gas is produced from synthesis gas, which is composed of carbon monoxide and hydrogen. Syngas is a useful product, but requires careful handling due to its flammability and the risk of carbon monoxide poisoning. The water-gas shift reaction can be used to reduce the carbon monoxide while producing additional hydrogen, resulting in water gas.

H₂O + C → H₂ + CO (ΔH = +131 kJ/mol)

Ankit Singh 6 years, 11 months ago

Hope this answer is helpful to u

Ankit Singh 6 years, 11 months ago

A fuel gas containing about 5o percent carbon monoxide 40 percent hydrogen and small amount of methane, carbon dioxide and nitrogen made by passing stem and air over heated coke and coal is known as water gas.its composition is (CO+H2).it is used as fuel.

Ayushi Ayushi 6 years, 11 months ago

ANSWER

Why does silicon show a higher covalency than carbon??

Posted by ???. Pragati 6 years, 11 months ago

CBSE > Class 11 > Chemistry

3 answers

Yogita Ingle 6 years, 11 months ago

Carbon cannot have a valency beyond four
C6 = 1s²2s²2p²
While silicon can extended covalency from 4 to 6
Si14 = 1s²2s²2p⁶3s²3p²
This is because of the absence of d-orbitals in the valence shell of carbon and presence of 3d-orbtials in the valence shell of silicon. Since silicon has vacant 3d- orbitals, it can accept electrons from electron donating species such as F^- ion to form complex ion.

Ankit Singh 6 years, 11 months ago

Hope this answer will help u

Ankit Singh 6 years, 11 months ago

Catenation is the linkage of atoms of the same element into longer chains. Catenation occurs most readily in carbon, which forms covalent bonds with other carbon atoms to form longer chains and structures.

ANSWER

Define Mayer's formula

Posted by Raja Kumar 6 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

???. Pragati 6 years, 11 months ago

The difference between the specific heat of a gas at constant pressure( cp ) and its specific heat at constant( cv ) volume is equal to the universal gas constant(R) divided by the molecular weight(M) of the gas. i.e. cp−cv=RM .This relation is known. as Mayer's formula.

ANSWER

Find the pressure

Posted by Raja Kumar 6 years, 11 months ago

CBSE > Class 11 > Physics

1 answers

???. Pragati 6 years, 11 months ago

, P = F/A.

ANSWER

Why is abscisic acid also known as stress harmone

Posted by Bindu S Bindu S 6 years, 11 months ago

CBSE > Class 11 > Biology

1 answers

Yogita Ingle 6 years, 11 months ago

Abscisic acid is known as the stress hormone because of the following reasons :
1. It helps plant to cope with adverse environmental conditions or stresses.
2. It causes temporary closure of stomata due to which there is reduction in the rate of transpiration. Therefore, it acts as antitranspirant and reduces water loss.
3. It acts as a general growth inhibtor and inhibitor of plant metabolism.
4. It inhibits seed germination.

ANSWER

What was the contribution of arabs in the field of science and philosophy ? Explain.

Posted by Shreya Singh 6 years, 11 months ago

CBSE > Class 11 > History

0 answers

ANSWER

Theee order

Posted by Satish Limboo 6 years, 11 months ago

CBSE > Class 11 > History

1 answers

Arif Ahmed 6 years, 11 months ago

Answer to Question - Three social hierarchies are ★★★ CLERGY - priest, religious leaders etc. They can impose taxes and make their own laws. The head of the church was pope who lived in Rome, it was guided by bishops and clerics. No one could easily become a priest serfs were banned. Womens were not allowed. Men became monks and women became nuns, monks spent their time in praying, studying, performing manual labours like farming. They lived in Abbey monasteries. They had single *** community there were separate place for men and women. ★★ NOBILITY - aristocrats, the Lords, they owned a large plot of land and it was cultivated by peasants in exchange they provided military protection. ★ PEASANTRY - the cultivators of land, it was of two types free peasants and serfs derived from serve meaning to perform duties. The free peasants were paid they're the remnants of the land belonging to the Lord. They also performed unpaid services life gathering fire wood, digging, building fences, helping in the field. Besides women and children were engaged in fields and pressing grapes for Lords. The serfs cultivated the Lords land but produces are only meant for Lords. They're not paid, the Lord had monopolies like they can use Lords wine press for grinding wheat and can use the oven for bread.

ANSWER

Which types of earthquake waves are responsible for maximum destruction on earth surface?

Posted by Deepak Yaduvanshi 6 years, 11 months ago

CBSE > Class 11 > Geography

1 answers

Yogita Ingle 6 years, 11 months ago

P-WAVE: the P-wave is the fastest of all seismic waves.when an earthquake occurs ,this wave is the first to arrive at a recording station,it can travel through solids,liquids and gases.it’s speed is somehow 13–17 km/sec.

S-WAVE:the S-wave is the second fastest of all seismic waves when an earthquake occurs .it can’t travel through liquids.

RAYLEIGH-WAVE: R-wave ,it’s speed is 0.91*speed of s-wave.the particle motion is combination of the P-and SV-vibrations.the particle motion describes “retrograde ellipse” in the vertical plane.

LOVE-WAVE:L-wave is dispersive in nature,because they can only propagate in a velocity -layered medium.particle motion is SH -motion,it has high amplitude.

Rayleigh Wave is most dangerous wave because of its behaviour of rolling movements.

ANSWER

Differentiate between cash basis of accounting and accrual basis of accounting on the basis of timing of recording an income?

Posted by Kunti Soy 6 years, 11 months ago

CBSE > Class 11 > Accountancy

0 answers

ANSWER

Find the equation of the set of all point the sum of whose distance fromA(3,0)andB(9,0)is12unit.write the name of curve

Posted by Gagan Choudhary 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Christin Mathew 6 years, 11 months ago

Did you birendra

ANSWER

What is the equation of parabola

Posted by Vipul Yadav 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Angle Anue 6 years, 11 months ago

There are six types of eq. In parabola a)x=cy^2 b)x=-cy^2 c)y=cx^2 d)y=-cx^2 e)y=bx+cx^2 d)y=bx-cx^2

ANSWER

What makes the italian cities revival

Posted by Armaan Patel 6 years, 11 months ago

CBSE > Class 11 > History

1 answers

Rinku Pandit 6 years, 11 months ago

Important questions

ANSWER

Tree k niche dabe man ko kisne khichdi khilayi

Posted by Ruchi Pal 6 years, 11 months ago

CBSE > Class 11 > हिंदी कोर

4 answers

Udita Singh 6 years, 11 months ago

उस पार्क के माली ने ।

Himani ?? 6 years, 11 months ago

Park k male ne !!

Sourav Kumar 6 years, 11 months ago

Uske parodsi ne

Mr Lovely 6 years, 11 months ago

ANSWER

Difference between placoid and cycloid scales

Posted by Anushka Garg 6 years, 11 months ago

CBSE > Class 11 > Biology

1 answers

Yogita Ingle 6 years, 11 months ago

Placoid scales	Cycloid scales
They are hard and tough	They are comparatively flexible
They are mainly present in cartilaginous fishes	They are mainly present in body fishes
They have rough posterior margins and give rough appearance to the skin of fishes	They have smooth posterior margins and give smooth appearance to skin of fishes

ANSWER

Name any two hill station during the british period

Posted by Kang Saab 6 years, 11 months ago

CBSE > Class 11 > History

2 answers

Yogita Ingle 6 years, 11 months ago

Two hill stations established by British in India are:

Mussoorie: it was established by Britishers and still remains the favourite sanatoriums for the British and is often referred to as fairyland by them.

Gulmarg: it is the popular skiing destination in the world and has second highest cabel cars in the world.

Manjima Kundu 6 years, 11 months ago

Please try to work with google assistant

ANSWER

Adjustment of preparation financial statements

Posted by Shirishti Singh 6 years, 11 months ago

CBSE > Class 11 > Accountancy

1 answers

Srishti Khurana 6 years, 11 months ago

Tell the adjustment

ANSWER

draw covalent bonding of SOFCl2

Posted by Sweta Kumari 6 years, 11 months ago

CBSE > Class 11 > Chemistry

0 answers

ANSWER

Please check question no. 3rd of 12.1 of class 11th mathematics.

Posted by Akash Kushwaha 6 years, 11 months ago

CBSE > Class 11 > Mathematics

2 answers

Akash Kushwaha 6 years, 11 months ago

I think that question is wrong.

Aman Kumar 6 years, 11 months ago

U can check in this app also.....

ANSWER

What is mathematical reasoning concept explain.

Posted by Preet Dhillion 6 years, 11 months ago

CBSE > Class 11 > Mathematics

1 answers

Ayushi Ayushi 6 years, 11 months ago

Mathematical reasoning is the critical skill that enables a student to make use of all other mathematical skills. With the development of mathematical reasoning, students recognize that mathematics makes sense and can be understood. They learn how to evaluate situations, select problem-solving strategies, draw logical conclusions, develop and describe solutions, and recognize how those solutions can be applied. Mathematical reasoners are able to reflect on solutions to problems and determine whether or not they make sense. They appreciate the pervasive use and power of reasoning as a part of mathematics.

ANSWER

Define Enantiomerism.

Posted by Aman Sirohi 6 years, 11 months ago

CBSE > Class 11 > Chemistry

2 answers

Yogita Ingle 6 years, 11 months ago

Stereoisomers which are related to each other as mirror images are called enantiomers. Enantiomers can contain any number of stereogenic centers, as long as each center is the exact mirror image of the corresponding center in the other molecule.

Ayushi Ayushi 6 years, 11 months ago

Enantiomers are chiral molecules that are mirror images of one another. Furthermore, the molecules are non-superimposable on one another. This means that the molecules cannot be placed on top of one another and give the same molecule. Chiral molecules with one or more stereocenters can be enantiomers. It is sometimes difficult to determine whether or not two molecules are enantiomers. For introductory purposes, simple molecules will be used as examples.

ANSWER

What is elasticity of supply

Posted by Preet Dhillion 6 years, 11 months ago

CBSE > Class 11 > Economics

2 answers

Joya Chatterjee 6 years, 11 months ago

It is the degree of responsiveness of the commodity within its own change in price.

Yogita Ingle 6 years, 11 months ago

We have been studying the impact of price on supply. However, all these definitions have been qualitative. With this in mind, the price elasticity of supply came into existence. The price elasticity of supply tackles the quantitative side of the price and supply relationship.

It refers to the degree of responsiveness of supply of a commodity with reference to change in the price of such commodity. Note that the price elasticity of supply is always positive. This happens because of the positive or direct relationship between price and supply, unlike demand.

ANSWER

What does "sleep like a log, not a dead man" mean?

Posted by Bhavika Mehta 6 years, 11 months ago

CBSE > Class 11 > English Core

1 answers

Rajat Vashisth 6 years, 11 months ago

On the next day at Darchen, narrator recovered from cold as a result of medicines.So,he slept comfortably.

ANSWER

Comment on Shahid Ali as writer

Posted by Naveen Bafna 6 years, 11 months ago

CBSE > Class 11 > English Elective NCERT

1 answers

Manjima Kundu 6 years, 11 months ago

Shahid Ali is a good and emotional writer he also love his friend to much. That'swhy only to keep his friend words he have written this story. He is also a friendly person because as we see in the story he said that he had good friendship with him in few days.

ANSWER

Bigyan v darshan k chhatra me ariyo k yogdan ki bayakhaya kigiya

Posted by Shivam Kumar 6 years, 11 months ago

CBSE > Class 11 > History

0 answers

ANSWER

Why boron exhibit anomalous behaviour

Posted by @@Ditya ®°@Thore????? 6 years, 11 months ago

CBSE > Class 11 > Chemistry

5 answers

Ayushi Ayushi 6 years, 11 months ago

Your wellcome Aaditya .

@@Ditya ®°@Thore????? 6 years, 11 months ago

Yhanks ayushi???

Ayushi Ayushi 6 years, 11 months ago

Your wellcome Ankit.

Ankit Singh 6 years, 11 months ago

Thanks ayushi ye question meujhe doubt tha

Ayushi Ayushi 6 years, 11 months ago

Reason for anomalous Behaviour of boron It is extremely hard and black coloured solid. It exists in many allotropic forms. Due to very strong crystalline lattice, boron has unusually high melting point. Rest of the members are soft metals with low melting point and high electrical conductivity.