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Question:- The number of d-electrons in Fe2+ (Z = 26) is not equal to that of A. p-electrons in Ne(Z = 10) B. s-electrons in Mg(Z = 12) C. d-electrons in Fe(Z = 26) D. p-electrons in CI(Z = 17)
Answer:- Option D
Question:- The metallurgical process in which a metal is obtained in a fused state is called A. smelting B. roasting C. calcinations D. froth floatation
Answer:- Option A
Question:- The molecules of which gas have highest speed? A. H2 at -73oC B. CH4 at 300 K C. N2 at 1,027oC D. O2 at 0oC
Answer:- Option A
Question:- The main buffer system of the human blood is A. H2CO3 - HCO3 B. H2CO3 - CO32- C. CH3COOH - CH3COO- D. NH2CONH2 - NH2CONH+
Answer:- Option A
Question:- The most commonly used bleaching agent is A. alcohol B. carbon dioxide C. chlorine D. sodium chlorine
Answer:- Option C
Question:- The nucleus of a hydrogen atom consists of A. 1 proton only B. 1 proton + 2 neutron C. 1 neutron only D. 1 electron only
Answer:- Option A
Question:- The heat required to raise the temperature of body by 1 K is called A. specific heat B. thermal capacity C. water equivalent D. None of the above
Answer:- Option B
Question:- The nuclear particles which are assumed to hold the nucleons together are A. electrons B. positrons C. neutrons D. mesons
Answer:- Option D
Question:- The mass of P4O10 that will be obtained from the reaction of 1.33 gram of P4 and 5.07 of oxygen is A. 2.05 gram B. 3.05 gram C. 4.05 gram D. 5.05 gram
Answer:- Option B
Question:- The octane number of zero is assigned to A. 2-methyl octane B. n-heptane C. iso-octane D. 3-methyl octane
Answer:- Option B
Question:- The octane number of zero is assigned to A. 2-methyl octane B. n-heptane C. iso-octane D. 3-methyl octane
Answer:- Option B
Question:- The most abundant rare gas in the atmosphere is A. He B. Ne C. Ar D. Xe
Answer:- Option C
Question:- The Latin word formica means ant. The name formic acid is derived from this Latin word because A. this acid, in ancient times, was used to eliminate ant-hills B. this corrosive acid is secreted by ants to drive away their enemies C. this acid was first obtained by the distillation of ants D. ants are attracted by the odour of this acid
Answer:- Option C
Question:- The ore which is found in abundance in India is A. monazite B. fluorspar C. bauxite D. magnetite
Answer:- Option A