546: Match List I (Oxdiation number) with List II (The element) and select the correct answer using the codes given below this lists:
List I List II
(Oxidation number) (The element)
A. 2 1. Oxidation number of Mn in MnO2
B. 3 2. Oxidation number of S in H2S2O7
C. 4 3. Oxidation number of Ca in CaO2
D. 6 4. Oxidation number of Al in NaAIH4
Codes:
A B C D
(a) 3 4 1 2
(b) 4 3 1 2
(c) 3 4 2 1
(d) 4 3 2 1
547: Consider the following statements:
1. In Macedonia, ethnic Albanians are a minority
2. In Kosovo, Serbians are a majority
Which of these statements is/are correct?
(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
548: Heart patients should avoid taking excess of:
(a) Proteins
(b) Fats
(c) Vitamins
(d) Carbohydrates
549: Which of the following pairs is not correct?
(a) Seismograph : Earthquakes
(b) Anemometer : Speed of the wind
(c) Hygrometer : Water vapour content of the atmosphere
(d) Lactometer : Specific gravity of liquids
550: Major difference between Varna and Jati, is that:
(a) Jatis are limited whereas Varnas are unlimited
(b) Jatis are only four whereas Varnas are many
(c) Varnas are only four whereas Jatis are many
(d) Jati is decided by birth but not Varna