AFNS chemistry most repeated question in Pakistan army \Navy\Airforce\FMA

Afns academic test preparation| Afns chemistry most repeated questions.

1 / 15

The reaction of sulfuric acid with calcium carbonate will produce;

calcium ,sulfate ,water & carbon dioxide

calcium ,chloride ,water & carbon dioxide

calcium ,nitrate, water & carbon dioxide

calcium ,acetate ,water & carbon dioxide

2 / 15

The common name of propanone is ;

Formaldehyde

Acetaldehyde

Benzaldehyde

Acetone

3 / 15

The common name of  Ethanedioic acid is ;

oxalic acid

succlnic acid

Glutaric acid

malonic acid

4 / 15

The common name of Methanal is ..........?

Formaldehyde

acetaldehyde

propionaldehyde

butyraldehyde

5 / 15

The bond energy is hydrogen molecules is ................?

110kcal/mol

106kcal/mol

104kcal/mol

150kcal/mol

6 / 15

The ionization energy of  hydrogen is .....................?

10.54ev

12.54ev

13.6ev

17.56ev

7 / 15

Which of the following is non spontaneous cell ? 

Electrolytic cell

Galvanic cell

Daniel cell

Not

8 / 15

In Dry cell, cathode is made up of.................?

Zinc

Carbon [ graphite]

ZnCl

Mno2 [ pyrolusite ]

9 / 15

In water , hydrogen is present ................. by mass

11.11%

31.13%

15.15%

22%

10 / 15

Kipps apparatus is used to prepare?

NaOH

CL2

H2S

CU

11 / 15

d - Block elements are  also called as................?

inner transition

outer transition

alkali metals

Both B & C

12 / 15

The product on the oxidation of 2 Alcohol is ?

Aldehyde

Ketone

Carboxylic acid

Ester

13 / 15

The shielding effect across the period...........?

Increases

Decreases

Remains same

None of them

14 / 15

which of the following is called sex linked disease?

leukemia

Alzheimers

color blindness

Malignancy

15 / 15

Which of the following vitamins is called a water soluble vitamin?

Vitamin K

Vitamin A

Vitamin C

Vitamin D

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