Question

This question paper contains four sections.
All the questions are compulsory.
Begin new section on new page.
聯
SECTION - A
Answer the following questions not more then 10-20 word. C
option. (24 x 1 = 24)
• Which of the following solution is must be basic?
(A) pH = 6.2
(B) pH = 9.3
The second most abundent metal in the earth's crust is
(C) pH= 11.
(A) Oxygen
(B) Silicor
(C) aluminiu
Ethane with the molecular formula C He has
(A) 8 covalent bonds
(B) 7 covale
(C) 6 covalent bonds
(D) 9 covale
Mendeleev predicted the existence of two elements and named
eka-aliuminium Identify the elements which took their postions a
(A) Si and Ge
(B) Si and Ga (C) Ge and
Function of chlorophyll in photosynthesis is
(A) Absorbing light energy
(B) breakin
(C) No function
(D) Reduct
It is the main thinking part of the brain.
(A) Fore brain
(B) Mid brain
(C) Hind b
Fill in the blanks with suitable option.
Quick lime is also known as
(calcium oxide)
All acids generate
on reacting with metals. (Hydr
The elements or compounds which occur naturally in the earth's
(ore/minerals)answer do​

Answer 1

Answer:

1. and is pH=6.2 is right answer