Earn Money Jobs   NIACL 685 Assistant Vacancies   |   Central University of Punjab Non-Teaching Post   |   Central University of Punjab Teaching Post   |   Bank of Baroda 600 PO Vacancies   |   IBPS RRB Recruitment 2018   |   Punjab Govt Jobs 2018
Earn Money Jobs   Punjab Patwari Agriculture Preparation Video (Watch Now)   |   Weekly रोजगार समाचार (Watch Now)   |   NHM Interview/Typing Test Cancelled   |   PSSSB Clerk Typing Test Notice   |   Punjab Govt Exams Previous Papers

Chemistry

Q.1) The first metal used by man was

(A) iron

(B) copper

(C) gold

(D) bronze

Q.2) The gas used for artificial ripening of green fruit is

(A) ethylene

(B) ethane

(C) carbon dioxide

(D) acetylene

Q.3) The nucleus of an atom consists of

(A) electrons and neutrons

(B) electrons and protons

(C) protons and neutrons

(D) All of the above

Q.4) The most electronegative element among the following is

(A) sodium

(B) bromine

(C) fluorine

(D) oxygen

Q.5) The metal used to recover copper from a solution of copper sulphate is

(A) Na

(B) Ag

(C) Hg

(D) Fe

Q.6) The metallurgical process in which a metal is obtained in a fused state is called

(A) smelting

(B) roasting

(C) calcinations

(D) froth floatation

Q.7) The most commonly used bleaching agent is

(A) alcohol

(B) carbon dioxide

(C) chlorine

(D) sodium chlorine

Q.8) The gas used in the manufacture of vanaspati from vegetable oil is

(A) hydrogen

(B) oxygen

(C) nitrogen

(D) carbon dioxide

Q.9) 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

Q.10) 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

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