MCQ
In laboratory silicon can be prepared by the reaction
- ✓Silica with magnesium
- BBy heating carbon in electric furnace
- CBy heating potassium fluosilicate with potassium
- DNone of these
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Assertion $(A)$ : The first ionization enthalpy of $3 d$ series elements is more than that of group $2$ metals
Reason $(R)$ : In $3d$ series of elements successive filling of d-orbitals takes place.
In the light of the above statements, choose the correct answer from the options given below :
$(A)$ $0.01 \,M\, HCl$
$(B)$ $0.01 \,M \,NaOH$
$(C)$ $0.01 \,M \,CH _{3} COONa$
$(D)$ $0.01 \,M \,NaCl$
