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What happens when quicklime is heated with silica

Posted by Sadish Mohammad 7 years, 9 months ago

CBSE > Class 11 > Chemistry

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What is ph of soil

Posted by Deependra Pal 7 years, 9 months ago

CBSE > Class 11 > Chemistry

1 answers

Prashant Mishra 7 years, 9 months ago

Soil ph is a measure of the acidity and alkalinity in soil .Ph level range from 0to 14 with 7 is being neutral .Less tha 7 increasing acdi nature but above 7 baseic nature are increasing.

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I am fail in class 11th but i want to go in class 12 i know that i can do my best at class 12 but no school give me addmesion in class 12 please tell me what i can do 12 class has bem started help me

Posted by Albert Einstein 7 years, 9 months ago

CBSE > Class 11 > Chemistry

2 answers

Albert Einstein 7 years, 9 months ago

Our teacher do not giving me another chance

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Prashant Mishra 7 years, 9 months ago

So,u start do hard work and give advice his teacher I do hard work in class 12 my marks in butter in class 12.i promise to ki study with hard work. Please give me only one chance.

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In Which of the following cases is the bond length of C-O maximum: A) Carboxylate ion B) Phenoxide ion C) p-nitro Phenoxide ion D) 2,4 di mitro Phenoxide ion Also state the reason.

Posted by Meenakshi Pandey 7 years, 9 months ago

CBSE > Class 11 > Chemistry

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What is the enthalpy change for an adiabatic process

Posted by Neev Pradhan 7 years, 9 months ago

CBSE > Class 11 > Chemistry

1 answers

Rishabh Sahu 7 years, 9 months ago

0 or zero.

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balancing ionic redox raction either by ion eleteon method or by oxidation number method MnO4(aq)+I(aq)->MnO2(s)+I2(s)

Posted by F Zothanpari 7 years, 9 months ago

CBSE > Class 11 > Chemistry

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Solution type

Posted by Ayush Kumar Mishra 7 years, 9 months ago

CBSE > Class 11 > Chemistry

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Carbon-oxygen Bond length are equal in carbonate ions.

Posted by Sonam Roy 7 years, 9 months ago

CBSE > Class 11 > Chemistry

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The electronegativity of Nitrogen and chlorine are same however NH3 exist as liquid whereas HCL as gas. Why?

Posted by Sonam Roy 7 years, 9 months ago

CBSE > Class 11 > Chemistry

1 answers

Rishabh Sahu 7 years, 9 months ago

Nitrogen ,Fluorine and Oxygen show hydrogen bonding. In The due to hydrogen bonding the molecules are closely packed so liquid state but no H bonding in HCl

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What does periodic table given a name as spdf block

Posted by Nitraj Bharti 7 years, 9 months ago

CBSE > Class 11 > Chemistry

1 answers

Rishabh Sahu 7 years, 9 months ago

According to the subshell in which the last electron gets filled . Except for helium.

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After eating amla (phyllantus emblica) or Indian gooseberry ,if we drink water why it tastes sweet??

Posted by Mehak Mahajan 7 years, 9 months ago

CBSE > Class 11 > Chemistry

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why do gases show deviation from ideal gas behaviour? what is vanderwaal pressure and volume correction . write vanderwaal equation for n more gas?

Posted by Kundan Kkk 7 years, 9 months ago

CBSE > Class 11 > Chemistry

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What is the effect of (1):addition of h2 (2):removal of CO

Posted by Anubhav Kaushik 7 years, 9 months ago

CBSE > Class 11 > Chemistry

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Propanal and pentan3 one are ozonolysiis product of alkene

Posted by Anubhav Kaushik 7 years, 9 months ago

CBSE > Class 11 > Chemistry

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Why does the pH of pure water decreases with the increase in temperature?

Posted by Saranya Pal 7 years, 9 months ago

CBSE > Class 11 > Chemistry

3 answers

Rishabh Sahu 7 years, 9 months ago

And vice versa

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Rishabh Sahu 7 years, 9 months ago

Ionisation of water which increases H+ concentration as well as OH- concentration is an endothermic process . As temperature decrease concentration of ions decrease so negative log in H+ increase so on increase.

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Deependra Pal 7 years, 9 months ago

Total Ph of pure water is 100 degree and increase 6.14 in temperature

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What is alkane?

Posted by Devesh Upreti 7 years, 9 months ago

CBSE > Class 11 > Chemistry