Download App

The s-block Elements — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistryThe s-block Elements1 Mark
Question
What is magnesia cement? Give its composition.
✓

Answer

When a saturated solution of magnesium chloride is mixed with magnesium oxide, it sets to a hard mass. This hard mass is known as magnesia cement. Its composition is $\mathrm{MgCl}_2 \cdot 5 \mathrm{MgO} \cdot \mathrm{H}_2 \mathrm{O}$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "1 Marks Question" from The s-block Elements→The s-block Elements — all question types→Chemistry STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Calculate number of hydrogen atom in 0.2 $mol C _6 H _{12} O _6$.
→
Give two examples of $d s p^2$
→
Why is position of hydrogen in periodic table not justified?
→
The element with $ns^2, np^5$ configuration is non-metal or metal? Why?
→
Which is best reducing agent and best oxidising agent?
→
Why do alkali metals have low melting and boiling points?
→
Consider the elements:
Cs, Ne, I and F
Identify the element which exhibits neither the negative nor does the positive oxidation state.
→
Which group elements are called chalcogens?
→
A person was using water supplied by Municipality. Due to shortage of water he started using underground water. He felt laxative effect. What could be the cause?
→
The standard molar entropy of $\mathrm{H}_2 \mathrm{O}(\mathrm{I})$ is $70 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$. Will the standard molar entropy of $\mathrm{H}_2 \mathrm{O}(\mathrm{s})$ be more, or less than $70 \mathrm{JK}^{-1} \mathrm{~mol}^{-1}$ ?
→