Q-1. Answer the following questions in one word :
(1) Give the name of a metallic element which is
tighter than water.
(2) What is iron compound formed when iron reacts
with water called ?
(3) Which non-metal is lustrous ?
14 ) which non-metal is a good conductor of
electricity
(5) What is the smallest unit of an element called ?
(6) What is produced when sulphur reacts with
angen?
(7) What is the property of metals by which they
can be drawn into wires called?
(8) Which non-metallic element is stored in water?
(9) From which metal can thin wire be drawn?
(10) Which metal foil is used for decorating sweets ?
(11) Which among aluminium, iron and copper
is the most reactive metal ?
(12) Where is the iron element found in our body?
Answers
Answer:
HII DEAR
Explanation:
1) LITHIUM
2) oxide
3)iodine
4)graphite
5)atom
6) sulfuric acid
7) ductility
8)phosphorous
9)aluminium
10)vark
11)aluminium
12) blood
HOPE IT HELPS DEAR
Explanation:
answer 1 lithium
answer 2 iron III oxide
answer 3 bromine
answer 4 graphite
answer 5 An atom is the smallest particle of an element, having the same chemical properties as the bulk element. The first accurate theory explaining the nature of matter was Dalton's Atomic Theory: 1. All matter is composed of atoms, and atoms are indivisible and indestructible
answer 6:Reason: Sulphur is formed and reaction of sulphur with oxygen. Answer is Option (c) . Since Reason mentioned is false because when sulphur burns in air then sulphur reacts with oxygen to form sulphur dioxide which gives the pungent smell. Instead of has it is gas.
answer 7
Ability of metals to be drawn into wires is known as ductility.
answer 8
Phosphorus
answer 9
aluminium
answer 10
Vark, also called varak (also silver leaf), is super fine filigree foil sheet of pure metals, typically silver but sometimes gold, used to decorate South Asian sweets and food, but also placed on mounds of saffroned rice served on platters, to make those look more appetising.
answer 11
Aluminium is the most reactive metal. Zinc displaces copper, and iron from their solutions. Zinc is more reactive than Cu and Fe metal.
answer 12
Iron is an essential element for all forms of life and is non-toxic. The average human contains about 4 grams of iron. A lot of this is in haemoglobin, in the blood.