How many unpaired electrons are present in ground state for Fe²⁺(Z=26)
How many unpaired electrons are present in ground state for Fe²⁺(Z=26) Options (a) 6 (b) 2 (c) 8 (d) 4…
8 years ago
Questions
Which of the following is obtained,when formaldehyde reacts with ammonia
Which of the following is obtained,when formaldehyde reacts with ammonia Options (a) Formaldehyde ammonia (b) Formalin (c) Hexamethylene tetramine (d)…
8 years ago
How many electrons in an atom with atomic number 105 can have (n + l) = 8
How many electrons in an atom with atomic number 105 can have (n + l) = 8 Options (a) 30…
8 years ago
Borax is used as a cleansing agent because on dissolving in water it gives
Borax is used as a cleansing agent because on dissolving in water it gives Options (a) alkaline solution (b) acidic…
8 years ago
The calorific value of fats,carbohydrates and proteins is in the order of
The calorific value of fats,carbohydrates and proteins is in the order of Options (a) proteins > carbohydrates > fats (b)…
8 years ago
The two ice cubes kept pressed against each other, stick to each other due to
The two ice cubes kept pressed against each other, stick to each other due to Options (a) intermolecular forces (b)…
8 years ago
100 cm of a given sample of H₂O₂ gives 1000 cm³ of O₂ at STP. The given sample is
100 cm of a given sample of H₂O₂ gives 1000 cm³ of O₂ at STP. The given sample is Options…
8 years ago
Which one of the following compounds on nitration easily produces nitro derivative
Which one of the following compounds on nitration easily produces nitro derivative Options (a) C₆H₆ (b) C₆H₅NO₂ (c) C₆H₅CH₃ (d)…
8 years ago
certain crystals produce electric signals on application of pressur.This phenomenon
certain crystals produce electric signals on application of pressur.This phenomenon is called Options (a) pyroelecricity (b) ferroelectricity (c) piezoelectricity (d)…
8 years ago
A gas decolourised by KMnO₄ solution but gives no precipitate with ammoniacal cuprous
A gas decolourised by KMnO₄ solution but gives no precipitate with ammoniacal cuprous chloride is Options (a) ethane (b) methane…
8 years ago