The oxides which are soluble in sodium hydroxide are:
1. $A{s}_2{O}_3$ 2.$S{b}_2{O}_3$ 3.SnO
The correct options are:

Q.

Of the following oxides, the oxides which are soluble in sodium hydroxide are:

1. $A{s}_2{O}_3$

2. $S{b}_2{O}_3$

3. $SnO$

Q.

Q. With reference to communication technologies, which of the following statements is/are correct?

Select the correct answer using the code given below:

1. 
   1 only
2. 
   2 and 3 only
3. 
   1, 2 and 3
4. 
   1 and 3 only

Q.

Which of the following organizations is/are transcontinental in its composition?

1. ASEAN 2. NATO

3. SCO 4. Mercosur

Q.

Q. Consider the following statements about the types of forests found in India:

Which of the above given statements is/are correct?

1. 
   1 only
2. 
   3 only
3. 
   1, 2 and 3
4. 
   1 and 3 only

Q. Consider the following statements and pick out the wrong one.
1) The solubility, thermal stability and the basic character of the hydroxides of alkaline earth metals increases from $Mg(OH{)}_2$ to $Ba(OH{)}_2$
2) The dehydration of hydrated chlorides, bromides and iodides of $Ca,Sr$ and $Ba$ can be achieved on heating
3) The chlorides of both beryllium and aluminium are soluble in organic solvents and are used as Lewis acids.