Questions

Which of the following reactions are exothermic?

$$\begin{gathered} 1) C + O2 → CO2 \\ 2) 2Mg + O2 → 2MgO \\ 3) CuSO4 + 5H2O → CuSO4.5H2O \\ 4) All the above \end{gathered}$$

Select the synonym of

dire

Which ruler of Vijayanagar allowed the Portuguese to build a church in his empire?

Select the synonym of

bouffant

Burning Magnesium ribbon produces white ash, which dissolves in water to form____.

Barbara creates a table of the six essential nutrients.

Macronutrients : Micronutrients

Carbohydrates : Fats

Proteins : Vitamins

Water : Minerals

Where did Barbara make an error in placement of a nutrient?

Select the antonym of

VILE

Select the synonym of

gaudy