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Question:- The molecule which has the highest percentage of ionic character among the following is A. HI B. HF C. HCI D. HBr
Answer:- Option B
Question:- The high reactivity of fluorine is due to A. its high electro negativity B. small size of fluorine atom C. availability of d-orbitals D. strong F - F bond
Answer:- Option A
Question:- The iron ore magnetite consists of A. Fe2O3 B. Fe3OH4 C. FeCO3 D. 3Fe2O3 .. 3H2O
Answer:- Option A
Question:- The ionisation energy of hydrogen atom in the ground state is x KJ. The energy required for an electron to jump from 2nd orbit to 3rd orbit is A. 5x/36 B. 5x C. 7.2 x D. x/6
Answer:- Option A
Question:- The major constituent of air is A. nitrogen B. carbon dioxide C. oxygen D. hydrogen
Answer:- Option A
Question:- The main chemical constituent of clay is A. silicon oxide B. aluminium borosilicate C. zeolites D. aluminium silicate
Answer:- Option D
Question:- The mineral containing both magnesium and calcium is A. magnesite B. calcite C. carnallite D. dolomite
Answer:- Option D
Question:- The metal does not give H2 on treatment with dilute HCL is A. Zn B. Fe C. Ag D. Ca
Answer:- Option C
Question:- The number of g-molecule of oxygen in 6.02 x 1024CO molecules is A. 1 gram of molecule B. 0.5 gram of molecule C. 5 gram of molecule D. 10 gram of molecule
Answer:- Option C
Question:- The most extensive, commercially useful source of thorium as monazite sand occurs in India at A. Orissa coast B. Travancore coast C. West Bengal coast D. Gujarat coast
Answer:- Option B
Question:- The main active constituent of tea and coffee is A. nicotine B. chlorophyll C. caffeine D. aspirin
Answer:- Option C
Question:- The maximum number of isomers for an alkene with molecular formula C4H8 is A. 5 B. 4 C. 2 D. 3
Answer:- Option B
Question:- The hardest form of carbon is A. coke B. graphite C. diamond D. charcoal
Answer:- Option C
Question:- The most important ore of aluminium is A. bauxite B. magnetite C. haematite D. monazite
Answer:- Option A