Question

U rugy - 1
20-1100-2930n- Science & Technology-I-PAPER (E)
10h English Medium
(NEW COURSE)
Time : 2 Hrs
Pages 4
Total Marks : 40
A-1 A) Choose and write the correct option:
1) The power of a convex lens of focal length 25 cmis
a) -0.4D
b) +0.25D
d) + 4D
2) Carbon dioxide is passed through .., white precipitate is formed
a) Caco,
b) Cao
c) Ca(OH),
d) Cac,
3) For equal rise in temperature iron absorbs more heat than lead
because...
a) Specific heat of iron is greater than that oficad
b) Specific heat of iron is lesser than that oflead.
c) Iron is good conductor of heat whereas lead is an insulator of heat,
d) Iron has higher melting point than that of lead.
4) .. . react with steam to form its oxide.
a) Iron
b) Potassium
c) Sodium
d) Calcium
5) Alkaline earth metals have valency 2. This means that their position
in the modern periodic table is in....
a) group 16
b) group 2
c) period 2
d) d-block
B) Solve the following questions:
1) Write the structural formula and L.U.P.A.C.name of ethyl alcohol,
2) Considering first correlation, complete the second.
Iris: Pupil :: Ciliary muscles:.
3) Find the odd one out.
Loudspeaker, electric motor, magnet, microphone.
SCIENCE 1​

Answer 1

Answer:

1. 4D
2. Caco
3. a
4. b

hope it helps you

please mark me the brainliest

Answer 2

Answer:

1.4d

2.coca

3.a

4.b

hey mate here is your answer