- Na2CO3
- NaCl
- NH4Cl
- KCl
- a
-
In Na₂CO₃, NaOH is strong base and H₂CO₃ is weak acid.
In NaCl, Na is strong acid and Cl is strong base.
In NH₄Cl, HCl is strong acid and NH₄OH is weak base.
In KCl, K is strong acid and Cl is strong base.
- NaCl and ZnO
- NaCl and MgO
- KNO3 and MgO
- ZnO and CaCO3
- b
-
Isomorphous compounds are those that have the same crystal structure.
NaCl is chemical formula of Sodium Chloride.
MgO is chemical formula of Magnesium Oxide.
- Orange Juice
- Mango Juice
- Both Mango and Orange Juice
- Can’t say
- d
-
Ali, Shahid, Saad and Feroz
Apple Juice, Mango Juice, Orange Juice.
- Above 100C
- At 0C
- At 100C
- At all temperature
- d
-
Evaporation is s surface phenomenon and can occur at any temperature as long as water is in liquid form.
- 21,28
- 22,28
- 21,29
- 22,29
- d
-
2+2=4
4+3=7
7+4=11
11+5=16
16+6=22
22+7=28
- Father
- Brother
- Son
- Uncle
- d
-
X & Y are two brothers.
A is mother of X (it means A is also mother of Y).
B is brother of A (it means B is Uncle of both X and Y)
- C
- D
- E
- F
- c
-
There are seven letters.
The middle position is the 4th letter which is E.
- Twenty One
- Twenty
- Eleven
- Twenty Two
- a
-
The person is counted twice.
(11th from left & 11th from right)
11 + 11 – 1
21
- 2
- 5
- 4
- 10
- b
-
Largest number is 20
Smallest numbers are 16 and 12
Difference of Two smaller number is 4
Largest No / Difference= 20/4=5
- Add background image to all slides individual
- There is no such option in MS Power Point
- Add background image in slide master
- Use auto format option
- c