NCERT Exemplar III — task. Science CBSE, Class 10.

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எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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1. The composition of aqua-regia is

Dil.\(HCl\) : Conc. \(HNO_3\) → \(3 : 1\)
Dil.\(HCl\) : Dil.\(HNO_3\) → \(3 : 1\)
Conc.\(HCl\) : Conc.\(HNO_3\) → \(3 : 1\)
Conc.\(HCl\) : Dil. \(HNO_3\) → \(3 : 1\)

2. Which of the following are not ionic compounds?
(i) \(KCl\)
(ii) \(HCl\)
(iii) \(CCl_4\)
(iv) \(NaCl\)

(i) and (iii)
(i) and (ii)
(ii) and (iii)
(iii) and (iv)

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