- Secondary cell
- Diffuse cell
- Tertiary cell
- Primary cell
- d
-
Primary cell in not rechargeable. It is also called Galvanic cell.
Secondary cell is rechargeable. It is also known as Accumulator.
2025
All Solved Current and Past Papers of 2025 are included in this section of ETEST Academy’s Website. All MCQs of Year 2025 are solved with short detailed answers. ETEST Academy updates this portion of Past Papers 2025 on daily basis.
Distillation under reduced pressure:
- Steam distillation
- Fraction distillation
- Destructive distillation
- Vacuum distillation
- d
-
مثال کے طور پر جب ہم پانی کو اُبالتے ہیں تو پانی 100 سینٹی گریڈ پر اُبلتا ہے۔
پانی کے اُبلنے کے دوران پانی پر ہوا کا دباؤ / پریشر ہوتا ہے۔اگر ہم پانی کے اوپر سے ہوا کے دباؤ کو ویکیوم پمپ کی مدد سے کم کر دیں تو یہی پانی 100 سینٹی گریڈ کی بجائے کم درجہ حرارت پر بھی آسانی سے اُبل سکے گا
Example of salt of strong acid and weak base is:
- 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.
Select a pair of compounds which are isomorphic in nature.
- 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.
Ali is not drinking mango juice and Shahid is not drinking orange juice. Ali and Saad drink different juices. Feroz alone drinks apple juice. What is Saad’s juice, if all four of them are drinking different juices?
- Orange Juice
- Mango Juice
- Both Mango and Orange Juice
- Can’t say
- d
-
Ali, Shahid, Saad and Feroz
Apple Juice, Mango Juice, Orange Juice.
Evaporation of water is possible:
- 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.
What number comes next? 2,4,7,11,16,____, ____
- 21,28
- 22,28
- 21,29
- 22,29
- b
-
2+2=4
4+3=7
7+4=11
11+5=16
16+6=22
22+7=28
X and Y are two brothers, B is A’s brother but A is the mother of X. What is B to Y?
- 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)
Write the middle letter: B C D E F G H
- C
- D
- E
- F
- c
-
There are seven letters.
The middle position is the 4th letter which is E.
If you are the eleventh in a queue, starting from either side and how many persons are there in the queue?
- Twenty One
- Twenty
- Eleven
- Twenty Two
- a
-
The person is counted twice.
(11th from left & 11th from right)
11 + 11 – 1
21