MEDIUM
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Which of the following is a metalloid?

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Important Questions on Minerals and Metals

MEDIUM
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
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-
EASY
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
What is the gas liberated when the metals react with dilute acids?
MEDIUM
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals

Consider the elements of group-14. Choose the correct alternative:

a) Si and Ge are semiconductors

b) Carbon and silicon are non-metals

c) Sn and Pb are metals

d) Si and Ge are metalloids

HARD
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
Differentiate between metals and non-metals on the basis of their chemical properties.
MEDIUM
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals

 Which of the following elements would yield a basic oxide?

 Na,S,C,K,H

MEDIUM
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
An element is soft and can be cut with a knife. It is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be :
EASY
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
The elements whose oxides can turn litmus solution blue are:
HARD
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
The elements whose oxides can turn litmus solution red are:
EASY
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
Which of the following does not react with dilute hydrochloric acid even on heating but it reacts with sulphuric acid?
HARD
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
Write an equation for the reaction of magnesium with oxygen.
MEDIUM
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
Choose the acidic oxides, basic oxides and neutral oxides from the following:
Na2O; CO2; CO; SO2; MgO; N2O; H2O.
EASY
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
A basic oxide will be formed by the element-
HARD
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
How do non-metals react with hydrogen? Explain with an example.
MEDIUM
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
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:
EASY
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
The elements which behave like metals and non-metals are called _____. (transition metals / semi-metals)
MEDIUM
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
What type of oxides are formed when non-metals react with oxygen? Explain with an example.
HARD
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
How do metals react with hydrogen? Explain with an example.
MEDIUM
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
What is the nature of the oxide Na2O? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.
MEDIUM
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
What is the nature of the oxide SO2? What happens when it is dissolved in water? Write the chemical equation of the reaction involved.
HARD
Science>Chemistry>Minerals and Metals>Chemical Properties of Metals and Non-metals
What type of oxides are formed when metals combine with oxygen? Explain with the help of an example.