Question 11 MarkThe breakdown of pyruvate to give carbon dioxide, water and energy takes place in_______ .(Cytoplasm, Mitochondria, Nucleus)AnswerMitochondriaView full question & answer→
Question 21 MarkThe kidneys in human beings are a part of the system for _______ .(Nutrition, Respiration, Excretion)AnswerExcretionView full question & answer→
Question 31 MarkThe action of losing water through the aerial parts of the plant is known as _______ .(Reduction, Transpiration, Watershed)AnswerTranspirationView full question & answer→
Question 41 MarkThe action of losing water through the aerial parts of the plant is known as _______.(Reduction, Transpiration, Watershed)AnswerTranspirationView full question & answer→
Question 51 MarkThe opening and closing of stomatal pores is controlled by _______ .(Phagocytes, Guard cells, Mast cells )AnswerGuard cellsView full question & answer→
Question 61 MarkIn _______ form is cellular energy stored in autotrophic organisms. (Glycogen, Protein, Starch)AnswerStarchView full question & answer→
Question 71 MarkOn moving down in any group, the metallic character of the elements ............ (decrease, increases, medium)AnswerincreasesView full question & answer→
Question 81 MarkThe valency of noble gases is ............ (zero, one, two)AnswerzeroView full question & answer→
Question 91 MarkPosition of ........ in the periodic table is controversial. (hydrogen, oxizen, $Co2)$AnswerhydrogenView full question & answer→
Question 101 MarkMendeleev named scandium as ............. (eka-boron, eka-carbon, eka-silicon)Answereka-boronView full question & answer→
Question 111 MarkOxides of ......... elements are basic in nature. (metallic, Non metals, Alloy)AnswermetallicView full question & answer→
Question 121 MarkOxides of non-metallic elements are ............ in nature. (acidic, basic, neutral)AnsweracidicView full question & answer→
Question 131 MarkIn the modern periodic table, noble gases are placed in group............$ (18, 28, 48)$Answer$18$View full question & answer→
Question 141 MarkThe electronic configuration of an element is $2, 8, 3,$ then it is an element of .......... period. (second, third, fourth)AnswerthirdView full question & answer→
Question 151 MarkIf the valency of an element is 2, then it lies in group ...............$ (2, 4, 6)$Answer$2$View full question & answer→
Question 161 MarkThe position of cobalt in Mendeleev’s periodic table is prior to............... (nickel, sodium, boron)AnswernickelView full question & answer→
Question 171 MarkThe element known as eka-silicon is.......... (germanium, Gypsum, Sand)AnswergermaniumView full question & answer→
Question 181 MarkAccording to Newlands, .............. elements occur in nature. $(26, 46, 56)$Answer$56$View full question & answer→
Question 191 MarkNewlands’ law of octaves is applicable for…… elements. (Heavy, smooth, lighter)AnswerlighterView full question & answer→
Question 201 MarkLithium, sodium and ......... are the members of Dobereiner’s triad. (Nitrogen, Vanedium, potassium)AnswerpotassiumView full question & answer→