AFNS Chemistry Test 3

AFNS Chemistry Test 3

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Posted: 24 Feb, 2024

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Chemistry Test 3

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1 / 50

The whole universe is made up of almost Hydrogen?

2 / 50

which of the following element have unpaired electrons in s subshell

3 / 50

If an object is lying on a horizontal frictionless surface, and the angle is

4 / 50

Which of the species is not paramagnetic?

5 / 50

skyscraper meaning

6 / 50

Cobalt (Co) has ....... unpaired electrons in its 3d orbital.

7 / 50

What value is the pH of a 10^-10 M NaOH solution closely related to?

8 / 50

Marsh gas is

9 / 50

4.184calories=?

10 / 50

Most abundant element in earth's crust is:

11 / 50

If the density of a cube is determined by measuring the mass and length of its side, and the maximum error in measurement of mass and length is 3% and 2% respectively, what will be the maximum error in the measurement of density?

12 / 50

The most reactive allotropic form of phosphorus is:

13 / 50

What is the geometry of an H2S molecule?

14 / 50

In 32.5 g of CH4 the percentage of carbon is.......

15 / 50

As the atomic number of the halogen increases, the halogens

16 / 50

The reaction of an acid and metal carbonate will
lead to formation?

17 / 50

Find the temperature at which the rate of effusion of Nā‚‚ is 1.625 times to that of SOā‚‚ at 500Ā°C

18 / 50

Which of the following is a mixture of low-boiling
hydrocarbons?

19 / 50

Which of the following is similar to electron

20 / 50

The whole universe is made up of almost Hydrogen?

21 / 50

Valency of carbon is:

22 / 50

Find the fraction of the total pressure exerted by
hydrogen if it is mixed with ethane in an empty
container at 25Ā°C.

23 / 50

Most abundant element in earth's crust is:

24 / 50

Due to the high reactivity nature of the alkali metals, they are found in.

25 / 50

How many Faradays of electricity are required to remove one mole of AlCl3?

26 / 50

What is the chemical formula of wood spirit?

27 / 50

If a man travel 90km in 1 hour and 40 minutes. He will cover 1km in

28 / 50

The hydrides which are non stoichiometric in nature are

29 / 50

H2SO4 is a/an:

30 / 50

The energy obtained from electric cells and batteries as a result of a chemical reaction is called:

31 / 50

Structural formula of cycloalkane is.....

32 / 50

The element that has a giant covalent structure is:

33 / 50

The product of the nucleophilic substitution reaction between 2-iodobutane and sodium ethoxide (CH3CH2ONa) is

34 / 50

NMR spectroscopy is used for:

35 / 50

The property of carbon chain formation is called

36 / 50

Cesium and Francium are liquids above

37 / 50

The most reactive allotropic form of phosphorus is

38 / 50

Methylformate and acetic acid are which type of isomers.

39 / 50

Carbon atoms of diamond are

40 / 50

nP2=30 where the value of n?

41 / 50

Which organic compound does not undergo the Cannizzaro reaction?

42 / 50

Which of the species is not paramagnetic?

43 / 50

Oxidation state of sodium

44 / 50

The velocity of photon is:

45 / 50

Which block of elements are known as transition
elements?

46 / 50

bond energy of hydrogen(H2)is.....

47 / 50

The Celsius scale starts from:

48 / 50

Baking powder is:

49 / 50

Electronic configuration of alkaline earth element is:

50 / 50

Which of the following is more acidic in nature?

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