Plants exhale at night time which gas...? Mcqs

Latest MCQs

Plants exhale at night time which gas...?

(A) O2
(B) H20

(C) Co1
(D) CO2

Latest MCQs

Abdul Qadeer Khan died on ______...?

(A) 09 October 2021
(B) 10 October 2021

(C) 11 October 2021
(D) 13 October 2021

Latest MCQs

Which of the following is used in normal pencils...?

(A) Graphite
(B) Silicon

(C) Charcoal
(D) Slate

Latest MCQs

Milk has pH:e:...?

(A) 6.5
(B) 7.5

(C) 8.5
(D) 9.5

Latest MCQs

What is the chemical formula of washing soda...?

(A) Na2CO3
(B) NaHCO3

(C) Na2CO3
(D) Na2CO3.10H2O

Latest MCQs

Chemical formula of baking soda is ______...?

(A) Na2CO3
(B) K2CIO3

(C) Na2SO4
(D) NaHCO3

Latest MCQs

When a gas turns into a liquid the process is called:...?

(A) Condensation
(B) Evaporation

(C) Deposition
(D) Sulimation

Latest MCQs

How many neutrons are in hydrogen...?

(A) 0
(B) 1

(C) 2
(D) 3

Latest MCQs

Which one of the following acid is used in car’s battery...?

(A) Hydrochloric acid
(B) Hydrofluoric acid

(C) Sulfuric acid
(D) Nitric acid

Latest MCQs

What is most common salt in sea water...?

(A) Calcium barbonate
(B) Potassium Chloride

(C) Sodium Chloride
(D) Magnesium Sulphate

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