1) which one is need for a healthy and balance diet ? a) burger b) mineral c) juice d) oily foods 2) what is enzyme of sliva ? a) H2O b) HCL c) amylase d) gastric juice 3) what type of enzyme is liver produce ? a) HCL b) bile c) sliva d) water 4) HCL and pancareatic juice are enzyme of ? a) liver and pancarea b) pacarea and gall blader c) liver and gall blader 5) protien's simplest form is : a) glucose b) glycerol c) fatty acid d) amino acid 6) the smallest form of veins are : a) artery b) tubes c) blood cappilaries 7) which set of plant tube carry dissolve mineral salt ? a) phloem b) pith c) xylem 8) which set of plant tube that carry food & distribute it into all places of plant ? a) xylem b) pith c) phloem 9) the rate of transpiration in plant is greatly reduce at night because : a) low absorbtion of water b) stomata are coled at night c) osmosis 10) in which process water enters to the root hairs ? a) xylem b) phloem c) osmosis d) pith e) stomata f) transpiration 11) which is neither be created and nor be destoryed ? a) element b) compound c) mixture d) atom 12) who discover atoms a) democritus b) rutherford 13) who do expriments about atoms a) rutherford b) jhon dalton 14) what is meaning of an atom a) divisibe b) indivisible c) tiny particle 15) the word atom come from _________ language a) ancient egypt b) farsi c) ancient greek 16) the particles of an atom is called a) compound b) mixture c) subatomic particle 17) how many elements are discovered ? a) 115 b) 116 c) 117 d) uncountable 18) H2SO4 is a formulae of : a) sulphuric acid b) glucose c) salt 19) salt is made up of ___________ compound a) C6H12O6 b) NaCl c) CaCo3 20) a tight bonding is called : a) covalent bond b) bonding c) ionic bond 21) different version of the same element is called : a) atomic number b) isotope c) atomic mass 22) isotopes with radio active rays is called : a) radiation b) radio isotope c) radio active isotope 23) a table which have all information about elements are called : a) element chart b) atomic table c) periodic table

SCIENCE

由
打印
嵌入

排行榜

视觉风格

选项

切换模板

恢复自动保存：？