1.

(A): Even though diamond is covalent, it has a high melting point (R) : Diamond is a three dimensional gaint molecule. The C-C in it are very strong.

Answer»

Both A and R are TRUE. R is the CORRECT EXPLANATION for A. 
Both A and R are true. Ris not the correct explanation for A. 
A is true, R is false. 
A is false and R is true 

Answer :A


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