Question 4 :
Is it TRUE OR FALSE, Copper displaces zinc from zinc sulphate solution?
Question 5 :
The metal which produces hydrogen gas on reaction with dilute hydrochloric acid as well as sodium hydroxide solution is
Question 7 :
Metals generally react with dilute acids to produce hydrogen gas. Which one of the following metals does not react with dilute hydrochloric acid?
Question 11 :
A more reactive metal can replace a less reactive metal, but a less reactive one cannot replace a more reactive metal. TRUE/FALSE
Question 12 :
The property of metals producing a ringing sound when struck is called?
Question 18 :
Zinc sulphate forms a colourless solution in water. Will you observe any colour on adding copper turning in it?
Question 20 :
Litmus indicator solution turns red in acidic solutions and blue in alkaline solutions?
Question 21 :
A metal which reacts with acid as well as base to form hydrogen gas.
Question 24 :
When a copper vessel is exposed to moist air for long, it acquires a dull green coating. TRUE OR FALSE?
Question 25 :
Saloni took a piece of burning charcoal and collected the gas evolved in a test tube. Find the nature of the gas.
Question 27 :
Articles made of metals produce ringing sound when struck hard. True or False
Question 30 :
What happens when dilute sulphuric acid is poured on a copper plate?
Question 31 :
Boojho has learnt that non-metals on beating with a hammer are generally broken into pieces. Which of the following is a nonmetal?
Question 33 :
The substance that will be flattened on beating with a hammer is
Question 34 :
Complete the reaction, $ Magnesium (Mg) + Oxygen (O_2 ) → $ ?
Question 35 :
Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?
Question 36 :
A purple coloured non-metal forms a brown solution in alcohol which is applied on wounds as an antiseptic. Name the nonmetal.
Question 39 :
Is it TRUE OR FALSE, Sodium is a very reactive metal?
Question 42 :
What is the property of metals by which they can be beaten into thin sheets is called?
Question 43 :
The property of metals by virtue of which they can be drawn into wires is called ductility. True or False
Question 45 :
Which of the following property is not responsible for copper to be used as electrical conduction wires?
Question 47 :
Generally, metals are good conductors of heat and electricity but non-metals are poor conductors.
Question 48 :
Metals are good conductor of electricity but poor conductor of heat. True or False