`{:(,"Column I",,"Column II"),((A),"Inorganic benzene",(p),"An allotrope of carbon"),((B),"Fulerene",(q),"Orthosilicate"),((C),"Phenacite",(r),"An ore of boron"),((D),"Colemanite",(s),"Borazine" (B_(3)N_(3)H_(6))):}`A. A-s,B-p,C-r,D-qB. A-p,B-s,C-q,D-rC. A-q,B-r,C-s,D-pD. A-s,B-p,C-q,D-r

`{:(,"Column I",,"Column II"),((A),"Inorganic benzene",(p),"An allotro

1.	`{:(,"Column I",,"Column II"),((A),"Inorganic benzene",(p),"An allotrope of carbon"),((B),"Fulerene",(q),"Orthosilicate"),((C),"Phenacite",(r),"An ore of boron"),((D),"Colemanite",(s),"Borazine" (B_(3)N_(3)H_(6))):}`A. A-s,B-p,C-r,D-qB. A-p,B-s,C-q,D-rC. A-q,B-r,C-s,D-pD. A-s,B-p,C-q,D-r
Answer» Correct Answer - D

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In which following statement are correct. (a) Anhydrous hydrogen fluroide is a liquid at ordianry temperature while other halogen acid are gases. (b) Lead acetate does not form any precipitate with HF acid but other halogen acid from precipitates. (c) HF is heated with a mixture of `MnO_2` and `H_2SO_4`, no gas is evolved but In case of HCI, HBr and HI acids evolved gases. (d) HF is not oxidised by strong oxidising agent but other halogen acid are oxidised.A. (A) aB. (B) bC. (C) cD. d
Give the preparation of a) `XeOF_(4)` and b) `XeO_(2)F_(2)`
An amorphous solid (X) burns in air to form a gas (Y) which turns lime water milky. This gas decolourises aqueous solution of acidified `KMnO_4`. Gas (Y) reacts with oxygen to give another gas (Z) which is responsible for acid rain. X, Y and Z areA. X-C, Y-CO, Z-`CO_2`B. X-S, Y-`SO_2` , Z-`SO_3`C. X-P , Y-`P_2O_3` ,Z - `P_2O_5`D. X-S , Y-`SO_3` ,Z-`H_2SO_4`
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The heavier elements of groups 13 and 14 besides the group oxidation state exhibit another oxidation state which is two units lower than the group oxidation state and the stability of this lower oxidation state increases down the group. This concept which is commonly called inert pair effect has been used to explain many physical and chemical properties of the element of these groups. Element of group 13A. exhibit oxidation state of `+3` onlyB. form `M^(+)` and `M^(3+)` ionsC. exhibit oxidation states of +1 and +3D. form `M^(-)` and `M^(+)` ions
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`{:(,"Column I",,"Column II"),((A),"Inorganic benzene",(p),"An allotrope of carbon"),((B),"Fulerene",(q),"Orthosilicate"),((C),"Phenacite",(r),"An ore of boron"),((D),"Colemanite",(s),"Borazine" (B_(3)N_(3)H_(6))):}`A. A-s,B-p,C-r,D-qB. A-p,B-s,C-q,D-rC. A-q,B-r,C-s,D-pD. A-s,B-p,C-q,D-r

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