Question

of An element X forms an oxide which turns red litmus
blue Identify whether t is a metal or a non metal
022/who de sele articles become block after someone whes essured
to an
3 A non-metal t exists in two different forms yout 2 y
is the hardest natural substance where 2 is a good conductor
of electricity Identify x, y and 2
Ch? Name the metal which is alloyed with copper to make bronze
o 4 An element & forms as oxide. This osade reacts with Al
as well as Nach to form salt and water, Hame the find
of this oxide and gène one examsele.Write its reaction
either with the or NaOH.
show the formation of machen by the transfer of electron
I Metal X is found in nature as its sulphide xs it is used in
the galvanisation of iron artiles. Identify the metal X . How
will you convert this sulphide ore into the metal & Explains with
equations
The formule of four organic compounds are given below.
A
h CHCOOH CHO CH
d) which one of these comporands A, B, C ord is a saturated hydrocante
(1) Identify the organic acid and give its structural formula
Cuin which of the above compounds when heated at 443k in the
fresence of cone, 4 soy forms there as the major product?
that is the role played by Cone, H. Soy in this reaction Also
write the chemical equation involved
(w) hire a chemical equation when B and C react with each
ther in presence of cone h oy tame the major product
formed and mention one of its important dere​

Answer 1

Answer:

Explanation:

1.Only the metal oxide can change the red litmus blue

2. X- carbon, Y- diamond c- graphite

3. Tin

4.Since the oxide turns red litmus blue, therefore X is a metal because it is an alkaline oxide.

Most of the metals form respective metal oxides when react with oxygen.

Metal + Oxygen → metal oxide

Examples: (1) Reaction of potassium with oxygen:- Potassium metal forms potassium oxide when reacts with oxygen.

(2) Reaction of sodium with oxygen:- Sodium metal forms sodium oxide when reacts with oxygen.

. These questions are mixed. And not to be understand