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Chemistry Quiz 15

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Chemistry Quiz 15

1 / 50

E0red of an element cab be calculated by comparing it with _____________________?

2 / 50

With impurities like P and S the open hearth furnace is lined with ?

3 / 50

An acid with unpleasant smell_________________?

4 / 50

95% ethanol is called_________________?

5 / 50

Boiling points of hydrocarbons increase with the increase in number of carbon atoms. It is mainly due to_________________?

6 / 50

The concept of ensemble was introduced by____________?

7 / 50

Which is sold as fertilizer ___________________?

8 / 50

Which of the following is true in the case of Zn-Cu cell ?

9 / 50

Atoms of all the elements always contain in nucleus:

10 / 50

Methyl alcohol is not used__________________?

11 / 50

Concept of Triads was introduced by_______________?

12 / 50

A theoretical link between quantum mechanics and thermodynamics is_________?

13 / 50

Special features of borate glass is that it is_________________?

14 / 50

Voltaic cell can be recharged by______________?

15 / 50

The earth absorb radiation in Visible range but emit radiation at the same rate in the:

16 / 50

A 10 volume solution of H2O2 means_______?

17 / 50

The Lewis acids are__________________?

18 / 50

Benzene gives mainly_________?

19 / 50

Regular coiling or zigzagging of polypeptide through hydrogen bonding is its___________________?

20 / 50

Positive rays give flash on________________?

21 / 50

Hydrogen effuses four times more rapidly than volume of an unknown gas molar mass of unknown gas should be_______________?

22 / 50

Which of the following phenomenon is considered responsible for Global Warming?

23 / 50

The scientist who did not contribute in the construction of periodic table ?

24 / 50

Which of the following technique is simple and efficient to purify a substance____________________?

25 / 50

Solubility of CaF2 is 2.0?10-4 gdm-3 then Ksp of CaF2 is_______________?

26 / 50

The common name of propane -1 3-dioic acid is____________________?

27 / 50

In the production of wrought iron Mg Si and P are removed in the form of___________________?

28 / 50

The atomic radii decreases by increasing atomic number in________________?

29 / 50

Nitrates of which pair of elements give different products on thermal decomposition ?

30 / 50

Increase in atomic number is observed during_________________?

31 / 50

The half cells are interconnected through________________?

32 / 50

Find the PH of a 0.001 M solution of Nitric acid HNO3?

33 / 50

Formaldehyde condenses with phenol in the presence of dilute H2SO4 to yield________________?

34 / 50

Nitration of chlorobenzene gives___________________?

35 / 50

Borax is a white crystalline solid and it is_________________?

36 / 50

CO2 is gas while SiO2 is solid at room temperature?

37 / 50

Which of the following alloys contain(s) Cu and Zn?

38 / 50

Noble gases are named so because they are__________________?

39 / 50

Isotopes differs in______________________?

40 / 50

During sulphonation of benzene H2SO4 generates the electrophile _________________?

41 / 50

Which one of the following is not a semiconductor ?

42 / 50

An element has electronic conviguration 1s2 2s2 2p2. It belongs to__________________?

43 / 50

Which of the following statements is incorrect about halogens ?

44 / 50

If internal energy of the system is increased ____________________?

45 / 50

Equilibrium state is achieved quickly by the addition of ________________?

46 / 50

K2Cr2O7/H2SO4 generate____________________?

47 / 50

A reaction has values of ?H and ?S which are both positive. The reaction __________________?

48 / 50

Order of ease of halogenation in alkane is________________?

49 / 50

According to vital force theory_______________?

50 / 50

Which law states that ?equal volumes of all gases, at the same temperature and pressure, have the same number of molecules?

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