Classify each of the following solids as ionic, metallic, molecular, network (covalent) or amorphous.
`{:("(i) Tetra phosphorus decoxide "(P_(4)O_(10)),"(vii) Graphite"),("(ii) Ammonium phosphate "(NH_(4))_(3)PO_(4),"(viii) Brass"),("(iv) "SiC,"(ix) Rb"),("(iv) "I_(2),"(x) "LiBr),("(vi) Plastic ","(xi) Si"):}`

Classify the following solids as ionic , metallic , molecular , covalent network or amorphous . i) Si ii) I_(2) iii) P_(4) iv) Rb v) SiC vi) LiBr vii) Ammonium Phosphate (NH_(4))_(3) PO_(4) viii) Plastic ix) graphite x) Tetra phosphorous decoxide

Write down the electronic configuration of : {:("(i) "Cr^(3+),"(iii) "Cu^(+),"(v) "Co^(2+),"(vi) "Mn^(2+)),("(ii) "Pm^(3+),"(iv) "Ce^(4+),"(vi) "Lu^(2+),"(viii) "Th^(4+)):}

What is meant by the following terms ? Give an example of the reaction in each case. {:("(i) Cyanohydrin","(ii) Acetal","(iii) Semicarbazone"),("(iv) Aldol","(v) Hemiacetal","(vi) Oxime"),("(vii) Ketal","(vii) Imine","(ix) 2,4-DNP-derivative"),("(x) Schiff’s base",,):}

Express each of the following decimals in (p)/(q) form where q ne 0 and p,q are integers i) 0.36 ii) 15.4 iii) 10.25 iv) 3.25

Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configuration and coordination number. Also give stereochemistry and magnetic moment of the complex: (i) K[Cr(H_(2)O)_(2)(C_(2)O_(4))_(2)].3H_(2)O (ii) [Co*NH_(3))_(5)Cl.]Cl_(2) (iii) CrCl_(3)(py)_(3) (iv) Cs[FeCl_(4)] (v) K_(4)[Mn(CN)_(6)]

Which of the following undergoes an auto (self) reduction ? i) PbO ii) Fe_2O_3 iii) Cu_2S iv) TiCl_4

Which of the following points lie on the axes? Also name the axis (i) (-5,-8) (ii) (0,13) (iii) (4,-2) (iv) (-2,0) (v) (0,-8) (vi) (7,0) (vii) (0,0)

Write the quadrant in which the following points lie ? (i) (-2,3) (ii) (5,-3) (iii) (4,2) (iv) (-7,-6) (v) (0,8) (vi) (3,0) (vii) (-4,0) (viii) (0,-6)

Classify the following as linear, quadratic and cubic polynomials (i) 5x ^(2) + x-7 (ii) x -x ^(3) (iii) x ^(2) + x + 4 (iv) x -1 (v) 3p (vi) pi r ^(2)

Which of the following expressions are polynomias ? Which are not? Give reasons. (i) 4x ^(2) + 5x -2 (ii) y ^(2) -8 (iii)5 (iv) 2x ^(2) + (3)/(x) -5 (v) sqrt3x ^(2) + 5y (vi 1/x + 1 (x ne 0) (vii) sqrtx (viii) 3 xyz