An element reacts with oxygen to give a compound

Asked by admin @ 11/08/2021 in Chemistry viewed by 307 People

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be

a. calciumb. carbonc. silicond. Iron

Answered by admin @ 11/08/2021

Calcium.
Calcium Oxide is formed when Calcium reacts with Oxygen.

But In certain cases , Silicon Dioxide may also be possible(Bcoz its solubility depends on its crystalline structure.)

Hope that helps.

An element reacts with oxygen to form an oxide

Asked by admin @ 17/08/2021 in Science viewed by 294 persons

an element reacts with oxygen to form an oxide which dissolve in dilute hydrochloric acid. the oxide forms also turns a solution of red litmus blue. is the elements a …

Is ocean water an element compound heterogeneous mixture or solution

Asked by admin @ 26/11/2021 in Chemistry viewed by 353 persons

Classify each of the following as an element, a compound, a homogeneous mixture, or a heterogeneous mixture: (a) seawater, (b) helium gas, (c) sodium chloride (salt), (d) a bottle of …

Which compound gives the colour to the cement

Asked by admin @ 29/08/2021 in Chemistry viewed by 302 persons

Which compound gives the colour to the cement? 1. Lime 2. Silica 3. Iron oxide 4. Alumina

Classify the following into element compound and mixture

Asked by admin @ 29/08/2021 in Science viewed by 354 persons

Classify the following into element, compound and mixture. (1) Sodium (2) Clay (3) Sugar solution (4) Calcium carbonate (5) Methane (6) Silver

Give the names of elements present in quicklime

Asked by admin @ 26/08/2021 in Science viewed by 321 persons

Question 5 Give the names of the elements present in the following compounds: (a) Quick lime (b) Hydrogen bromide (c) Baking powder (d) Potassium sulphate Class 9 - Science - …

Phosphorus burns in oxygen to give phosphorus pentoxide

Asked by admin @ 25/08/2021 in Science viewed by 344 persons

Phosphorus burns in oxygen to form Phosphorus pentoxide balance is equation.

Which heading element gives the most prominent heading

Asked by admin @ 25/08/2021 in Computer Science viewed by 310 persons

Which heading element gives the most prominent headings?

Classify the following into elements compounds and mixtures

Asked by admin @ 24/08/2021 in Science viewed by 430 persons

Classify the following into elements, compounds and mixtures. (a) Sodium (b) Soil (c) Sugar solution (d) Silver (e) Calcium carbonate (f) Tin (g) Silicon (h) Coal (i) Air (j) Soap …

4 g of hydrogen reacts with 20g of oxygen

Asked by admin @ 23/08/2021 in Chemistry viewed by 371 persons

4g of hydrogen reacts with 20g of oxygen to form water the mass of water formed is

Give the name of element present in baking powder

Asked by admin @ 20/08/2021 in Science viewed by 287 persons

Give the names of the elements present in baking powder and potassium sulphate

An unknown aldehyde a on reacting with alkali gives

Asked by admin @ 20/08/2021 in Chemistry viewed by 275 persons

An unknown Aldehyde 'A' on reacting with alkali gives Beta-hydroxy-aldehyde, which loses water to from an unsaturated aldehyde, But-2-enal. Another aldehyde 'B' undergoes disproporational reaction in the presence of con.alkali …

Which of the following metals reacts vigorously with oxygen

Asked by admin @ 20/08/2021 in Chemistry viewed by 419 persons

Which one of the following metal reacts vigorously with oxygen and water? a) Sodium b) Potassium c) Calcium d) Magnesium. please tell bcz I m confused as both potassium and …

Isotopes of an element are chemically similar give reason

Asked by admin @ 20/08/2021 in Science viewed by 350 persons

. Give reason for the following a) Isotopes of an element are chemically similar b) An atom is electrically neutral c) Noble gases show least reactivity d) Nucleus of an …

A solution reacts with crushed egg shells to give

Asked by admin @ 20/08/2021 in Chemistry viewed by 288 persons

A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains (a) NaCl (b) HCl (c) LiCl (d) KCl NCERT Class 10th Science Chapter …