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    • Posted by Rachit Verma 4 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Himani Rajput 4 years ago

    Crystalline solid

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    ANSWER
    Unit cell is the smallest portion of a crystal lattice which, when repeated in different directions, generates the entire lattice. Generally unit cell is considered as in cubic shape. A unit cell is characterised by six parameters. Unit cells can be broadly divided into two categories, primitive and centred unit cells. When constituent particles are present only on the corner positions of a unit cell, it is called as primitive unit cell (simple). When a unit cell contains one or more constituent particles present at positions other than corners in addition to those at corners, it is called a centred unit cell (bcc, fcc and ecc). In each cell, the contribution of constituent particles at the corner is 1/8 and at the face centre is 1/2 and at the edge centre is 1/4 and at the centre of body is whole constituent atom. Q.1. How many constituent particles are present in a simple cubic unit cell? (a) 1 (b) 2 (c) 3 (d) 4 (e) 5 Q.2. How many constituent particles are present in a body centred cubic unit cell? (a) 8 (b) 6 (c) 4 (d) 2 (e) 0 Q.3. How many constituent particles are present in a face centred cubic unit cell? (a) 0 (b) 8 (c) 6 (d) 3 (e) 4 Q.4. How many parameters are of a unit cell (a) 6 (b) 4 (c) 2 (d) 0 (e) 8 Q.5. A substance is made up of two elements X and Y and crystallize in fcc. If X is present at the corners and Y present at the face centres then what will be the formula of the substance? (a) XY (b) XY4 (c) X4Y (d) X3Y4 (e) XY3

    • Posted by Bhumika Agrawal 4 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Sumit Kumar 4 years ago

    CBSE > Class 12 > Chemistry
    • 5 answers

    Arunav Chatterjee 3 years, 11 months ago

    Optically inactive

    0Thank You

    Sumit Kumar 4 years ago

    But it has non super imposable mirror image

    0Thank You

    Bhumika Agrawal 4 years ago

    No

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    Sachin Gupta 4 years ago

    No because chiral carbon absent

    0Thank You

    Salilesh Verma 4 years ago

    No

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    ANSWER

    • Posted by Azra Parveen ?? 4 years ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Azra Parveen ?? 3 years, 10 months ago

    The melting point of group 15 elements

    1Thank You

    Bhumika Agrawal 4 years ago

    p-hydroxy azobenzene

    1Thank You

    Jasdish Kaur 4 years ago

    p-hydroxy azobenzene

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    • Posted by Rajyavardhan Singh Rathore 4 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Bhumika Agrawal 4 years ago

    Ethane nitrile

    0Thank You

    Sachin Gupta 4 years ago

    Ethane nitrile

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    ANSWER

    • Posted by Arunav Chatterjee 4 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Bhumika Agrawal 4 years ago

    Shape selective catalyst

    0Thank You

    Sachin Gupta 4 years ago

    Shape selective catalyst

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    ANSWER

    • Posted by Jaideep Randhawa 4 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Bhumika Agrawal 4 years ago

    The non-participation of the two s electrons in bonding due to the high energy needed for unpairing them. The inert pair theory was proposed by Sidgwick.

    0Thank You

    Jasdish Kaur 4 years ago

    It is the tendency of the two electrons in the outermost atomic s-orbital to remain unshared in compounds of post-transition metals.

    1Thank You

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    • Posted by Avni Pandey 4 years ago

    CBSE > Class 12 > Chemistry
    • 5 answers

    Garima Yadav 3 years, 11 months ago

    Ys

    0Thank You

    Azra Parveen ?? 4 years ago

    Yes

    0Thank You

    Himanshi Rajput 4 years ago

    Yes

    0Thank You

    Bhumika Agrawal 4 years ago

    U will complete your syllabus

    0Thank You

    Bhumika Agrawal 4 years ago

    I don't know

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    ANSWER

    • Posted by Surjit Nahakpam 4 years ago

    CBSE > Class 12 > Chemistry
    • 5 answers

    ~$Hivi ¶¥Ja¶Ati 4 years ago

    7

    0Thank You

    Bhumika Agrawal 4 years ago

    Neutral

    0Thank You

    Shashank 11 4 years ago

    0

    0Thank You

    Ranjeet Singh 4 years ago

    2

    0Thank You

    Deepak Panday 4 years ago

    8

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    ANSWER

    • Posted by Debraj Das 4 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Bhumika Agrawal 4 years ago

    You can react with KOH

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    • Posted by Atharva Verma 4 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Bhumika Agrawal 4 years ago

    It's potassium mercury iodide solution Which is used to detect ammonia gas Ammonia gives brown precipitation with Nesseler reagent

    0Thank You

    Satish Suryawanshi 4 years ago

    It's potassium mercury iodide solution Which is used to detect ammonia gas Ammonia gives brown precipitation with Nesseler reagent

    1Thank You

    ANSWER

    • Posted by Vanshika Tomar 4 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Arunav Chatterjee 4 years ago

    Aliphatic

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    • Posted by Shiva M 4 years ago

    CBSE > Class 12 > Chemistry
    • 5 answers

    Deepak Panday 4 years ago

    Pata nahi

    0Thank You

    Rahul Kumar 4 years ago

    8 tetrahedral voids

    1Thank You

    Atharva Verma 4 years ago

    8 tetrahedral voids

    0Thank You

    Shubh Kesarwani 4 years ago

    If rank of cell be N THEN oct voids will be N And tetra will be 2N So the ans will be 8

    0Thank You

    Vidhi Kamboj 4 years ago

    There will be 2 tetrahedral voids .

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    • Posted by Gordhan Mali 4 years ago

    CBSE > Class 12 > Chemistry
    • 4 answers

    Arunav Chatterjee 4 years ago

    CH3OH+SOCl2_ CH3Cl+SO2+HCl

    0Thank You

    Bhumika Agrawal 4 years ago

    CH2OH+SOCl2-------->CH2Cl+SO2+HCl

    0Thank You

    Deepak Panday 4 years ago

    Ch2OH+SOCL2--------->CH2CL+SOw+HCL

    0Thank You

    Debraj Das 4 years ago

    CH2OH+SOCl2-------->CH2Cl+SO2+HCl

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    • Posted by ᵐꜞᔆᔆ᭄ Qᴜᴇᴇɴ✿࿐꧂ : ꨄ︎•, 4 years ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Snehil J@@T 4 years ago

    Hii

    1Thank You

    Ranjeet Singh 4 years ago

    A gya

    0Thank You

    Atharva Verma 4 years ago

    Abhi nahi aaya

    1Thank You

    ANSWER

    • Posted by Chemi Lama Sherpa 4 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Anushka Trivedi 4 years ago

    Refractive index of a solid is observed to have the same value along all directions indicates that it is isotropic in nature thus it must be an amorphous solid. Amorphous solids do not undergo clean clevage so, this solid will also not undergo sharp cleavage.

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    ANSWER

    • Posted by Om Digital Graphic And Animation 4 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Himanshi Sharma 4 years ago

    CBSE > Class 12 > Chemistry
    • 1 answers

    Benson E B 4 years ago

    Due to interhalogen bonding being weaker than X-X bonding

    2Thank You

    ANSWER

    • Posted by Sahil Shrivastav 4 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Sahil Shrivastav 4 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Vishwa Pratap 4 years ago

    If the reaction is endothermic the reaction process time would be minimised whereas if it's a exothermic reaction the time in reaction would eventually increase....in gernal scenario it's said as temperature is directly proportional to the rate of change of reaction but throughly it's not completely true

    1Thank You

    Bhumika Agrawal 4 years ago

    In endothermic the rate of reaction will increase. In exothermic the rate of reaction will decrease

    3Thank You

    ANSWER

    • Posted by Ayush Tripathi 4 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Vishwa Pratap 4 years ago

    The subject marks would be evaluated as last attempt

    0Thank You

    Bhumika Agrawal 4 years ago

    May be zero

    0Thank You

    ANSWER

    • Posted by Arunav Chatterjee 4 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Bharaman Jha 4 years ago

    When two single salts like Nacl and bacl2 are mixed then double salt are formed for eg kcl.mgcl2 .6H2O

    0Thank You

    Arunav Chatterjee 4 years ago

    Double salts are the mixture of Tu salts we can dissolve in aquatic medium shows the the test of all the ions present in the solution ex K2SO4.Al2(SO4)3.24 H2O

    0Thank You

    ANSWER

    • Posted by Miss Ritika 4 years ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

    • Posted by Miss Ritika 4 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Tec Om 4 years ago

    It means the maximum volume is occupied by atoms or molecules in a unit cell

    0Thank You

    Manpreet Kaur 4 years ago

    It is the fraction of the crystal (or unit cell) actually occupied by atoms . It must always be less than 100% because it is impossible to pack spheres without having some empty spaces between them.

    0Thank You

    ANSWER

    • Posted by Miss Ritika 4 years ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Unnati Ag. 4 years ago

    Para-magnetic solids

    0Thank You

    Manpreet Kaur 4 years ago

    Crystalline solid

    0Thank You

    ANSWER

    • Posted by Asvath A 4 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Tec Om 4 years ago

    Do pas pas wale carbon atom par ek ek halogen atom ho vahi hai vicinal dihalide

    0Thank You

    Tec Om 4 years ago

    Compounds in which halogen atom are attached to two adjacent carbon

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    ANSWER

    • Posted by Karan Bhatt 4 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 2 answers

    Atharva Verma 4 years, 1 month ago

    More

    0Thank You

    Bhumika Agrawal 4 years, 1 month ago

    U can draw more than 5 isomer of hexene

    0Thank You

    ANSWER

    • Posted by Bhumika Agrawal 4 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 3 answers

    Atharva Verma 4 years, 1 month ago

    Fluids

    1Thank You

    Shiva Jaiswal 4 years, 1 month ago

    Fluids (option B)

    2Thank You

    Shashank 11 4 years, 1 month ago

    Fluids

    2Thank You

    ANSWER

    • Posted by Scientist ..????? 4 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 5 answers

    Scientist ..????? 4 years ago

    How are u

    0Thank You

    Atharva Verma 4 years, 1 month ago

    Hlo

    0Thank You

    Bhumika Agrawal 4 years, 1 month ago

    Hlo

    1Thank You

    Levin Yadav 4 years, 1 month ago

    Hi

    1Thank You

    Manish Singh Yadav 4 years, 1 month ago

    Hii

    1Thank You

    ANSWER

    • Posted by Krishna Kaushik 4 years, 1 month ago

    CBSE > Class 12 > Chemistry
    • 0 answers
    ANSWER

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