Chemistry What is the mass percentage of oxygen in carbon dioxide (CO2) 0.305 0.509 0.727 0.658 0.305 0.509 0.727 0.658 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Suspension particles have the size between 10–1 – 10–2 cm 10–2 – 10–4 cm 10–8 – 10–10cm 10–5 – 10–7cm 10–1 – 10–2 cm 10–2 – 10–4 cm 10–8 – 10–10cm 10–5 – 10–7cm ANSWER DOWNLOAD EXAMIANS APP
Chemistry Man dies in the atmosphere of CO, because it Reduces the organic matter of tissues Combines with O2 present in the body Dries up the blood Combines with the haemoglobin of blood, thereby making the later incapable of absorbing O2 Reduces the organic matter of tissues Combines with O2 present in the body Dries up the blood Combines with the haemoglobin of blood, thereby making the later incapable of absorbing O2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Fertiliser having high nitrogen content is : Urea Calcium citrate Ammonium sulphate Ammonium nitrate Urea Calcium citrate Ammonium sulphate Ammonium nitrate ANSWER DOWNLOAD EXAMIANS APP
Chemistry Helium gas is filled in ballons because It is one of the constitutents of water It is lighter than air Its atomic number is 2 It is a noble gas It is one of the constitutents of water It is lighter than air Its atomic number is 2 It is a noble gas ANSWER DOWNLOAD EXAMIANS APP
Chemistry Atoms of different elements have Different atomic number and different number of valence electrons Different atomic number and same eletronic configu-ration Same atomic number and same electronic configuration Same number of electrons and neutrons Different atomic number and different number of valence electrons Different atomic number and same eletronic configu-ration Same atomic number and same electronic configuration Same number of electrons and neutrons ANSWER DOWNLOAD EXAMIANS APP
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