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Chemistry

Q.11) The metal that is used as a catalyst in the hydrogenation of oils is

(A) Ni

(B) Pb

(C) Cu

(D) Pt

Q.12) The most abundant rare gas in the atmosphere is

(A) He

(B) Ne

(C) Ar

(D) Xe

Q.13) The ore which is found in abundance in India is

(A) monazite

(B) fluorspar

(C) bauxite

(D) magnetite

Q.14) What are the number of moles of CO2 which contains 16 g of oxygen?

(A) 0.5 mole

(B) 0.2 mole

(C) 0.4 mole

(D) 0.25 mole

Q.15) The monomer of polythene is

(A) vinyl chloride

(B) ethylene

(C) ethyl alcohol

(D) None of the above

Q.16) The luster of a metal is due to

(A) its high density

(B) its high polishing

(C) its chemical inertness

(D) presence of free electrons

Q.17) The most malleable metal is

(A) platinum

(B) silver

(C) iron

(D) gold

Q.18) The oil used in the froth floatation process is

(A) coconut oil

(B) olive oil

(C) kerosene oil

(D) pine oil

Q.19) The number of waves in n x 10th Bohr's orbit are

(A) n2

(B) n

(C) n-2

(D) n3

Q.20) The material which can be deformed permanently by heat and pressure is called a

(A) thermoplastic

(B) thermoset

(C) chemical compound

(D) polymer

ਜੇਕਰ ਤੁਸੀ ਕਿਸੇ ਵੀ ਸਰਕਾਰੀ ਨੌਕਰੀ ਬਾਰੇ ਜਾਣਕਾਰੀ ਲੈਣਾ ਚਾਹੁੰਦੇ ਹੋ ਤਾ ਉੱਤੇ ਦਿੱਤੇ ਕੰਮੈਟ ਬਾਕਸ ਵਿੱਚ ਕੰਮੈਟ ਕਰ ਸਕਦੇ ਹੋ ਧੰਨਵਾਦ ਅਰਨ ਮਨੀ ਜੋਬਜ ਟੀਮ