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Home⇒ Everyday Science GK⇒ Chemistry
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Q61 ⇒ The number of d-electrons in Fe(Z = 26) is not equal to that of p-electrons in CI(Z = 17) [other wrong options] [Discuss in forum] p-electrons in Ne(Z = 10) s-electrons in Mg(Z = 12) d-electrons in Fe(Z = 26) |
Q62 ⇒ The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is oxygen [other wrong options] [Discuss in forum] carbon hydrogen nitrogen |
Q63 ⇒ The inert gases are ____ in water sparingly soluble [other wrong options] [Discuss in forum] insoluble soluble None of these |
Q64 ⇒ The main chemical constituent of the oil of cardamom which is responsible for flavour of this oil is cineole [other wrong options] [Discuss in forum] engenol geraniol limonene |
Q65 ⇒ The inexpensive and commonly used variety of glass is called soda glass. It is called so because is made using soda(sodium carbonate) [other wrong options] [Discuss in forum] was used initially for making bottles of soda(carbonated drink) was initially used for storing sodium carbonate is made using soda lime |
Q66 ⇒ The number of g-molecule of oxygen in 6.02 x 10CO molecules is 5 gram of molecule [other wrong options] [Discuss in forum] 1 gram of molecule 0.5 gram of molecule 10 gram of molecule |
Q67 ⇒ The molecular formula of phosphorous is P4 [other wrong options] [Discuss in forum] P1 P2 P3 |
Q68 ⇒ The Latin wordmeans ant. The name formic acid is derived from this Latin word because this acid was first obtained by the distillation of ants [other wrong options] [Discuss in forum] this acid, in ancient times, was used to eliminate ant-hills this corrosive acid is secreted by ants to drive away their enemies ants are attracted by the odour of this acid |
Q69 ⇒ The number of water molecules present in a drop of water (volume 0.0018 ml) at room temperature is 6.023 x 1019 [other wrong options] [Discuss in forum] 1.568 x 103 4.84 x 1017 6.023 x 1023 |
Q70 ⇒ The names of the scientists, Newlands, Mendeleev, and Meyer are associated with the development of periodic table of contents [other wrong options] [Discuss in forum] atomic structure metallurgy discovery of elements |
Q71 ⇒ The nucleus of a hydrogen atom consists of 1 proton only [other wrong options] [Discuss in forum] 1 proton + 2 neutron 1 neutron only 1 electron only |
Q72 ⇒ The isomerism which exists between CHCHCIand CHCI. CHCI is positional isomerism [other wrong options] [Discuss in forum] chain isomerism functional group isomerism metamerism |
Q73 ⇒ The major constituent of air is Nitrogen [other wrong options] [Discuss in forum] Carbon dioxide Oxygen Hydrogen |
Q74 ⇒ The metallurgical process in which a metal is obtained in a fused state is called smelting [other wrong options] [Discuss in forum] roasting calcinations froth floatation |
Q75 ⇒ Which among the following is
in liquid state at normal room
temperature? Mercury [other wrong options] [Discuss in forum] Sodium Phosphorus None of these |
Q76 ⇒ Which of the following gases is
used in cigarette lighters? Butane [other wrong options] [Discuss in forum] Methane Propane Radon |
Q77 ⇒ Liquefied petroleum gas (LPG)
consists of butane and propane [other wrong options] [Discuss in forum] ethane and hexane ethane and nonane None of these |
Q78 ⇒ Which of the following is a
chemical change? Burning of candle [other wrong options] [Discuss in forum] Evaporation of water Glowing of an electric bulb Liquefiction of air |
Q79 ⇒ Which of the following is incorrect? Potassium: Ka [other wrong options] [Discuss in forum] Mercury: Hg Silver: Ag Sodium: Na |
Q80 ⇒ The molecule which has the highest percentage of ionic character among the following is HF [other wrong options] [Discuss in forum] HI HCI HBr |
Or |