Question 1 :
A more reactive metal can replace a less reactive metal, but a less reactive one cannot replace a more reactive metal. TRUE/FALSE
Question 2 :
Litmus indicator solution turns red in acidic solutions and blue in alkaline solutions?
Question 3 :
Is it TRUE OR FALSE, Coal can be drawn into wires?
Question 7 :
Boojho has learnt that non-metals on beating with a hammer are generally broken into pieces. Which of the following is a nonmetal?
Question 10 :
Zinc sulphate forms a colourless solution in water. Will you observe any colour on adding copper turning in it?
Question 15 :
Generally, metals are malleable and ductile. Non-metals do not have these properties.
Question 19 :
On burning, metals react with oxygen to produce metal oxides which are basic in nature. Non-metals react with oxygen to produce non- metallic oxides which are acidic in nature.
Question 21 :
The substance that will be flattened on beating with a hammer is
Question 22 :
Is it TRUE OR FALSE, Copper displaces zinc from zinc sulphate solution?
Question 23 :
What is the sequence of metals from more reactive to less reactive among zinc, iron and copper?
Question 24 :
Which metals are soft and can be cut with a knife?
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 26 :
A metal which reacts with acid as well as base to form hydrogen gas.
Question 33 :
Which of the following non-metals reacts and catches fire on exposure to air?
Question 35 :
When a copper vessel is exposed to moist air for long, it acquires a dull green coating. TRUE OR FALSE?
Question 36 :
A less reactive metal replaces a more reactive metal from its salt solution in water. True or False
Question 37 :
The substance that will be flattened on beating with a hammer is
Question 38 :
Can you hold a hot metallic Pan when is without a plastic or wooden handle?
Question 39 :
Oxides of non-metals and metals are acidic in nature. True or False
Question 42 :
The property of metals producing a ringing sound when struck is called?
Question 46 :
The property of metals by virtue of which they can be drawn into wires is called ductility. True or False
Question 49 :
A metal is called ______ so it can be drawn into wires.
Question 50 :
A purple coloured non-metal forms a brown solution in alcohol which is applied on wounds as an antiseptic. Name the nonmetal.