Description : What is the formula of the ion formed when lithium achieves noble gas electron configuration?
Last Answer : The lithium cation is Li+.
Description : What is the nearest noble gas to potassium?
Last Answer : The nearest noble gas to potassium is argon.
Description : Which of the following molecules or ions is NOT formed when K metal reacts with liquid CH3OH? Is it: w) potassium ion x) hydrogen ion y) methoxy ion z) hydrogen molecule
Last Answer : ANSWER: X -- HYDROGEN ION
Description : What is Zwitter ion? Write the formula of Zwitter ion of alanine.
Last Answer : Ans:- The ion of a molecule having +ve change at one end and –ve charge at other is called zwitter ion.
Description : What ion is potassium most likely to form in compound?
Last Answer : K+ So it loses one electron
Description : What kind of ion is potassium?
Last Answer : It is a cation, with valency 1.
Description : What forms when a potassium ion is attracted to a chloride ion?
Last Answer : What is the answer ?
Description : The ion which activates salivary amylase activity is (A) Chloride (B) Bicarbonate (C) Sodium (D) Potassium
Last Answer : Answer : A
Description : During the nerve impulse transmission, following ion or ions may play significant roles D A. Sodium B. Potassium C. Chloride D. All of these
Last Answer : All of these
Description : The following are true about rods in darkness: a. there is tonic release of neurotransmitters b. the sodium ion channels are open c. the potassium ion channels are shut d. there is a net influx of sodium ions
Last Answer : there is a net influx of sodium ions
Description : Which of the following statements is not correct? (a) An action potential in an axon does not move backward because the segment behind is in a refractory phase. (b) Depolarisation of hair cells ... d) In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction.
Last Answer : (c) Rods are very sensitive and contribute to daylight vision.
Description : Name the ion responsible for unmasking of active sites for myosin for cross-bridge activity during muscle contraction. (a) Calcium (b) Magnesium (c) Sodium (d) Potassium
Last Answer : (a) Calcium
Description : Human urine is usually acidic because (a) potassium and sodium exchange generates acidity (b) hydrogen ions are actively secreted into the filtrate (c) the sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries (d) excreted plasma proteins are acidic.
Last Answer : (b) hydrogen ions are actively secreted into the filtrate
Description : (i) Write down the IUPAC name of the following complex : [CO(NH3)5Cl]2+ (ii) Write the formula for the following complex : Potassium tetrachloridonickelate (II) -Chemistry
Last Answer : i) [CO(NH3)5Cl]2+ IUPAC name : Pentaammine chlorido cobalt (III) ion (ii) Formula of the complex potassium tetrachloridonickelate (II) K2[NiCl4]
Description : What is Great or Noble Gas ?
Last Answer : He, Ne, Ar, Kr, Xe, Rn Inert gas because it does not take part in any chemical reaction. They are also called noble gases because they do not react with other elements .
Description : What is a common name for the substance which irritates lachrymal glands? (1) Tear Gas (2) Laughing Gas (3) Anaesthetic Gas (4) Noble Gas
Last Answer : (1) Tear Gas Explanation: Lacrimal gland, located under the upper eyelid at the outer cornea of the eye, is responsible for tearing during emotional stimulation or following corneal ... , causing a stinging sensation and tears. It produces severe lacrimation by irritating the conjunctivae.
Description : Which of the following is not a noble gas? (1) Hydrogen (2) Helium (3) Neon (4) Argon
Last Answer : (1) Hydrogen Explanation: The noble gases are the chemical elements in group 18 of the periodic table. This chemical series contains helium, neon, argon, krypton, xenon, and radon.
Description : Which of the following is a noble gas - (1) Argon (2) Hydrogen (3) Oxygen (4) Nitrogen
Last Answer : (1) Argon Explanation: Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table.
Description : Which one of the following elements is an example of noble gas? (1) Nitrogen (2) Hydrogen (3) Chlorine (4) Helium
Last Answer : (4) Helium Explanation: Noble gas refers to any of the seven chemical elements that make up Group Villa of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and element 118 (temporarily named ununoctium [Uuo]).
Description : The noble gas used in radiotherapy is (1) neon (2) argon (3) radon (4) xenon
Last Answer : (3) radon Explanation: An early-20th-century form of quackery was the treatment of maladies in a radiotorium. It was a small, sealed room for patients to be exposed to radon for its " ... , which results in genetic and other cell damage, resulting in increased rates of illness, including cancer.
Description : Radon differs from other naturally radioactive elements in which one of the following ways. Is it because radon w) is extremely radioactive x) decays into the element radium y) is a noble gas z) is as chemically active as fluorine
Last Answer : ANSWER: Y -- IS A NOBLE GAS
Description : Within a given period of the periodic table, the element with the lowest ionization energy is: w) transition metal x) alkali metal y) halogen z) noble gas
Last Answer : ANSWER: X -- ALKALI METAL
Description : Which noble gas has the highest melting point ? w) argon x) krypton y) xenon z) radon
Last Answer : ANSWER: Z -- RADON
Description : What is a common name for the substance which irritates lachrymal glands ? (1) Tear Gas (2) Laughing Gas (3) Anaesthetic Gas (4) Noble Gas
Last Answer : Tear Gas
Description : Which one of the following elements is an example of noble gas ? (1) Nitrogen (2) Hydrogen (3) Chlorine (4) Helium
Last Answer : Helium
Description : Which of the following is not a noble gas ? (1) Hydrogen (2) Helium (3) Neon (4) Argon
Last Answer : Hydrogen
Description : Helium gas is filled in ballons because (1) its atomic number is 2 (2) it is lighter than air (3) it is one of the constitutents of water (4) it is a noble gas
Last Answer : it is lighter than air
Last Answer : radon
Description : What is the formula for the polyatomic ion nitrate.?
Last Answer : NO3-.
Description : `Ni^(+2)` form a complex inon in water having the formula `[Ni(H_(2)O)_(6)]^(+2)`. How many of the following statement are true for the complex ion ?
Last Answer : `Ni^(+2)` form a complex inon in water having the formula `[Ni(H_(2)O)_(6)]^(+2)`. How many of ... )` (x) Effective atomic number of `Ni^(+2)` is 36.
Description : The brown ring test for `NO_(2)^(-)` and `NO_(3)^(-)` is due to the formation of complex ion with formula `:`
Last Answer : The brown ring test for `NO_(2)^(-)` and `NO_(3)^(-)` is due to the formation of complex ion with formula `:` A. ... )` D. `[Fe(H_(2)O)(NO)_(5)]^(2+)`
Description : A vessel with a volume of cubic meter contains liquid water and water vapor ion equilibrium at 600 kPa. The liquid water has mass of1kg. Using the steam table, calculate the mass of the water vapor. A. 0.99kg B. 1.57 kg C ... / kg vg = 0.3157 m^3 / kg Vtot = mƒ vƒ + mg vg mg = (tot-mƒ vƒ) / vg
Last Answer : 3.16 kg
Description : The following is true of 'new formula' WHO-ORS: A. It has Na+ ion concentration of 75 mM/L B. Its glucose concentration is 75 mM/L C. Its total osmolarity is 245 mOsm/L D. All of the above are correct
Last Answer : D. All of the above are correct
Description : The 'new formula' WHO-ORS differs from the older 'standard formula' WHO-ORS in the following respect(s): A. It has lower Na+ ion and glucose concentration B. It has higher K+ ion concentration C. It has no basic salt D. Both 'B' and 'C' are correct
Last Answer : A. It has lower Na+ ion and glucose concentration
Description : The noble gas which behaves abnormally in liquid state is
Last Answer : The noble gas which behaves abnormally in liquid state is A. Xe B. Ne C. He D. Ar
Description : What is the chemical formula for potassium hydrogen carbonate?
Last Answer : Need answer
Description : The noble gas was first time discovered by
Last Answer : The noble gas was first time discovered by A. Cavendish B. Willian ramsay C. Rayleigh D. Frankland
Description : Which one of the following configuration represents a noble gas ?
Last Answer : Which one of the following configuration represents a noble gas ? A. `1s^2 2s^2 p^6 , 3s^2` B. `1s^2 2s^2 p^6 ... . `1s^2 2s^2 p^6 , 3s^2 p^6 , 4s^2`
Description : Which of the following statement is not correct for a noble gas ?
Last Answer : Which of the following statement is not correct for a noble gas ? A. Argon is used to fill the ... in the atmosphere D. Xenon cannot from `XeF_(3)`
Description : Which of the following noble gas is the most polarized ?
Last Answer : Which of the following noble gas is the most polarized ? A. Radon B. Krypton C. Xenon D. Helium
Description : The first noble gas compound prepared by Bartlett is
Last Answer : The first noble gas compound prepared by Bartlett is A. `XeF_(2)` B. `KrF_(2)` C. `XePtF_(6)` D. `XeO_(3)`
Description : The lightest noble gas atom contains the following particles in its nucleus
Last Answer : The lightest noble gas atom contains the following particles in its nucleus A. 4 protons B. 3 neutrons ... and 1 neutron D. 2 protons and 2 neutrons
Description : What is the atomic number (Z) of the noble gas that reacts with fluorine ?
Last Answer : What is the atomic number (Z) of the noble gas that reacts with fluorine ? A. 54 B. 10 C. 18 D. 2
Description : The noble gas with highest ionization energy is
Last Answer : The noble gas with highest ionization energy is A. He B. Ar C. Xe D. Kr
Description : The noble gas which can from more number of compounds is
Last Answer : The noble gas which can from more number of compounds is A. Ne B. He C. Xe D. Ar
Description : Which of the following noble gas is least polarisable ?
Last Answer : Which of the following noble gas is least polarisable ? A. He B. Ne C. Kr D. Xe
Description : Which of the following is not a noble gas ?
Last Answer : Which of the following is not a noble gas ? A. `N_(2)` B. He C. Ne D. Ar
Description : The most abundant noble gas in the atmosphere is
Last Answer : The most abundant noble gas in the atmosphere is A. Argon B. Neon C. Helium D. Krypton