PRACTICE QUESTIONS ON CHEMICAL PROPERTIES METALS AND NON METALS

Q1    Show that MgO is a basic oxide. Give suitable equations also.

Q 2   shows that CO₂  is an acidic oxide. Give suitable equations also.

Q3    Name the metal that reacts a) vigorously with air at room temperature.

                                                        b) On prolonged heating.

Q 4   A metal X on heating gives a white powdery substance.

                a) Identify the metal ‘X’

                 b)  Write the chemical formulae and name of the white substance formed.

                c) Write the chemical equation for the same.

                d) What will happen if this powder is dissolved in water? Name the compound formed.  Also write the chemical   equation for the same.

                 e) What will happen when red litmus is dipped into the above solution?

                 f) What will happen when blue litmus is dipped into it?

                 g)  What is the nature of the solution formed?

Q5  Name the metal that reacts vigorously with cold water.

Q6   Name the gas liberated when metals reacts with water.

Q7  Name the gas liberated when metals reacts with acids.

Q8  How will you test for the presence of hydrogen gas?

Q9  Name two metals that do not react with water.

Q10 Name one non metal that is kept under water. Why?

Q11 Why sodium is kept under kerosene?

Q12  What happens when

                         a) An active metal is placed in water.

                         b) A magnesium ribbon is kept in a test tube containing hot boiling water.

                         c) Gold is place in test tube containing NaOH.

                         d) When Dilute HCl is kept for three days in a copper container.

                         e)  Name two metals that react with conc. H2SO4.

Q13  Why food stuff should not be placed in a metal container.

science model making competition

Slide Album: IMG 3845

AMAZING FACTS

Did you know that there are 206 bones in the adult human body and there are 300 in children (as they grow some of the bones fuse together).


The most dangerous animal in the world is the common housefly. Because of their habits of visiting animal waste, they transmit more diseases than any other animal.


The largest meteorite crater in the world is in Winslow, Arizona. It is 4,150 feet across and 150 feet deep.

The deepest part of the ocean is 35,813 feet (10,916 meters) deep and occurs in the Mariana Trench in the Pacific Ocean. At that depth the pressure is 18,000 pounds (9172 kilograms) per square inch.

The hottest planet in the solar system is Venus, with an estimated surface temperature of 864 F (462 C).

Boron nitride (BN) is the second hardest substance known to man

SCIENCE PRESENTATION

Slide Album: SCIENCE PRESENTATION

LIFE SKILLS WORKSHOP

Recently attended the workshop on life skills in Sahibabad. It was a three day workshop.An innovative one, it was basically for us as a teacher to understand the concept and meaning of life skills. How do we imbibe in ourselves and as a student even how can one nurture these skills in our life. I had a chance to conduct a one hour session with the group of around Eight students of 9 and 10 grade.It was full of fun activities and at the same time to inculcate within them basically what life skills are.

Slide Album: workshop in sahibabad

THIS IS FOR CLASS VIII STUDENTS. KINDLY DOWNLOAD THE NOTES FOR THE LESSON FORCE AND PRESSURE. ITS UNDER THE LABEL HEADING NOTES ON RIGHT SIDE OF THE SCREEN