How many of the following are white solids
`CaCO_3, PbCO_2, AgCl, AgBr, PbS, CdS, PbCl_2`

How many moles of O-atoms are there in 1 mole CaCO_(3)

Which compound for each of the following pairs is more ionic and why ? a. BeBr_(2) or MgBr_(2) , b. PbCl_(2) or PbCl_(4) c. AgBr or AgI , d. CuO or CuS

How many moles of PbCO_3 are present in whitelead ?

Which comopound from each of the following pairs ismore covalent and why ? {:((a),"CuO or CuS",(b),"AgCl or AgI"),((c ),PbCl_(2) or PbCl_(4),(d),BeCl_(2)or MgCl_(2)):}

Give equations for the following: Preparation of CO2 from CaCo3 ​

How many of the following are coloured or paramagnetic or coloured and paramagnetic both. NO_(2),Cu^(+1),O_(2),O_(3),Hg_(2)^(+2),Cd^(+2), Al,C("graphite"),Sc^(+3)

How many of the following species have no d-orbital s involved in their hybridisation XeF_(2),SnF_(2) PbCl_(2),SF_(4),C Cl_(4),BF_(3),SO_(2)Cl_(2),XeO_(2)F_(2),XeOF_(4),POCl_(3)

Which of the following will favour the formation of CO_2 (g) in equilibrium with CaO and CaCO_3 ?

Balance the following equation : Pb_3O_4 + HCl to PbCl_2 + H_2O + Cl_2 .

How many of following elements will liberate H_2 gas when treated with dil HNO_3 ? Mg, Zn, Sn, Pb