Advertisements
Advertisements
प्रश्न
Can you store pickle in an aluminium utensil? Give reason.
उत्तर
No, we cannot store the lemon pickle in aluminium utensil because aluminium is a metal and lemon is acidic. The acids react with metals to give hydrogen which would spoil the food and makes it unfit to use.
APPEARS IN
संबंधित प्रश्न
State five uses of metals
State one use of Copper.
State one use of Silver.
Give the composition of an alloy called solder. State its one property and one use.
What is meant by 22 carat gold? Name the metals which are usually alloyed with gold to make it harder.
Give the general characteristics of:
Alkali metals,
(i) bonding
(ii) action of air
(iii) action of water
(iv) action of acid
Which is the non-ionic compound in the compounds given below.
AgNO3 + Nacl → AgCl + NaNO3
On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.
A white crystalline solid which decrepitates on heating leaving a residue which fuses with the glass and evolves two gases one of which is coloured and acidic.
The most abundant metal in the earth’s crust is ____________.
Name two soft metals which can be cut with a knife.
