Agar is well suited as a solidifying agent because

A. it has been melted in boiling water

B. it can be cooled to about 40 to 42°C before hardening

C. it will not melt again until the temperature rises to about 80 to 90°C.

D. most microorganisms cannot degrade it.

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#Question id: 20218

#XL - P Chemistry

Mention AB₄F₂ type molecule.

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#Question id: 20219

#XL - P Chemistry

Which of the following is the correct order for lone pair and bonding pair electrons ? Lp = Lone pair and Bp = Bonding pair

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#Question id: 20220

#XL - P Chemistry

Which theory is useful to determine geometrical structure of molecules ?

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#Question id: 20221

#XL - P Chemistry

The one outermost electron present in Na element at

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#Question id: 20222

#XL - P Chemistry

In which molecules / ion have not all the equal bonds ?

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#Question id: 20223

#XL - P Chemistry

Which of the following has maximum bond angle ?