Chemistry The electronic configuration of an atom having atomic number ‘20’ is 2, 6, 8, 4 2, 8, 8, 2 2, 10, 8 2, 8, 10 2, 6, 8, 4 2, 8, 8, 2 2, 10, 8 2, 8, 10 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The material used in solar cells contains Caesium Silicon Thallium Tin Caesium Silicon Thallium Tin ANSWER DOWNLOAD EXAMIANS APP
Chemistry An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a : Power transmittor Generator Uninterrupted power supply (UPS) Battery Power transmittor Generator Uninterrupted power supply (UPS) Battery ANSWER DOWNLOAD EXAMIANS APP
Chemistry Among the following, which is always found in free-state in nature? Sodium Gold Copper Silver Sodium Gold Copper Silver ANSWER DOWNLOAD EXAMIANS APP
Chemistry Helium gas is filled in ballons because 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 It is one of the constitutents of water It is lighter than air Its atomic number is 2 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The two metal ions that cause hardness to water are: Sodium, Potassium Sodium, Calcium Calcium, Magnesium Sodium, Magnesium Sodium, Potassium Sodium, Calcium Calcium, Magnesium Sodium, Magnesium ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS