Question
Which of the following oxides is soluble in water?
Solution
Explanation: Calcium oxide (CaO), also known as quicklime, readily reacts with water to form calcium hydroxide, Ca(OH)₂. This reaction is exothermic and results in a basic solution. FeO (iron(II) oxide) and ZnO (zinc oxide) are both relatively insoluble in water. They may react slightly with water, but they don't dissolve significantly under normal conditions.
In certain code language.
'You are bad' is written as 'YO LO PO', 'Schools are bad' is written as 'NO PO YO', and 'You are human' is written as '...
Select the number from among the given options that can replace the question mark (?) in the following series.
218, 231, 248, 267, ?
What should come in place of the question mark (?) in the given series?
8, 21, 34, 47, 60, ?
The second number in the given number pairs is obtained by performing certain mathematical operation(s) on the first number of that pair. The same opera...
Select the appropriate picture next to the series from the given options.
Select the number from among the given options that can replace the question mark (?) in the following series.
1, 3, 7, 15, 31, 63, ?
Select the correct option that indicates the arrangement of the given words in the order in which they appear in an English dictionary.
1. Formal...
Statement: "All dogs are animals. Some animals are cats.":
Conclusion1. Some dogs are cats.
Conclusion 2. Some animals are dogs.
Which two numbers should be interchanged to make the given equation correct?
700 + 42 ÷ 6 × 45 – 54 × 9 + 14 = 355
