Description : Positively charged ions are called a. anions b. cations c. both d. none of them
Last Answer : cations
Description : Anion gap in plasma is because (A) Of differential distribution of ions across cell membranes (B) Cations outnumber anions in plasma (C) Anions outnumber cations in plasma (D) Of unmeasured anions in plasma
Last Answer : Answer : B
Description : Phosphorus and nitrogen ions generally get depleted in soil because they usually occur as (a) neutral ions (b) negatively charged ions (c) positively charged ions (d) both positively and negatively charged but disproportionate mixture.
Last Answer : (b) negatively charged ions
Description : A compound composed of cations and anions is called a?
Last Answer : covalent compound
Description : Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions .
Last Answer : (1) Isotopes Explanation: Atoms that have the same number of protons but different numbers of neutrons are called isotopes. For example, carbon-12, carbon13 and carbon-14 are three isotopes of the element ... has 6 protons, so that the neutron numbers of these isotopes are 6, 7 and 8 respectively.
Description : Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions
Last Answer : Isotopes
Description : Anion gap is the difference in the plasma concentrations of (A) (Chloride) – (Bicarbonate) (B) (Sodium) – (Chloride) (C) (Sodium + Potassium) – (Chloride + Bicarbonate) (D) (Sum of cations) – (Sum of anions)
Last Answer : Answer : C
Description : During electrolysis, the cations and anions of the electrolyte are 1. Discharged 2. Hydrolysed 3. In motion 4. Hydrated The correct answers are: (a) 1 and 3 (b) 2 and 4 (c) 3 and 4 (d) 1 and 2
Last Answer : Ans:(a)
Description : Ionic compounds containing cations (+ve ion) and anions (-ve ion) are?
Last Answer : Salt
Description : Explain why cations are smaller and anions are larger in size than their parent atom.
Last Answer : Ans.The ionic radius of cation is always smaller than the parent atom because the loss of one or more electrons increases the effective nuclear charge. As a result, the force of attraction of ... the force of attraction of the nucleus for the electrons decreases and hence the ionic radii increases.
Description : Active and passive transports across cell membrane differ in (a) passive transport is nonselective (b) passive transport is along the concentration gradient while active transport is due to metabolic ... (d) passive transport is confined to anions while active transport is confined to cations.
Last Answer : (b) passive transport is along the concentration gradient while active transport is due to metabolic energy
Description : When water breaks apart it releases positively charged hydrogen ions and negatively charged ions?
Last Answer : Need answer
Description : A high voltage applied to a gas discharge tube containing neon gas at very low pressure causes a current to flow through the tube. Which one of the following are the particles that flow towards the ... Are they w) electrons x) protons y) negatively charged neon ions z) positively charged neon ions
Last Answer : ANSWER: Z -- POSITIVELY CHARGED NEON IONS
Description : Pick out the correct statement. (A) Loss of electrons from neutral atoms produces negative ions (B) The radius of nucleus & atomic size are of the order of 10 -12 cm & 10 - 8 cm respectively (C) Gain of electrons by neutral atoms form cations
Last Answer : (B) The radius of nucleus & atomic size are of the order of 10 -12 cm & 10 - 8 cm respectivel
Description : Pseudo halides are anions having resemblance with halide ions. Group I metals can form salts with pseudo halides. Pseudo halogens can acts as ligands
Last Answer : Pseudo halides are anions having resemblance with halide ions. Group I metals can form salts with pseudo halides. ... and C black D. `Na(CN)_2^-`
Last Answer : Pseudo halides are anions having resemblance with halide ions. Group I metals can form salts with pseudo halides. ... NaBr C. (C) NaF D. (D) Nal
Last Answer : Pseudo halides are anions having resemblance with halide ions. Group I metals can form salts with pseudo halides. ... . H_2O` D. (D) None of these
Last Answer : Pseudo halides are anions having resemblance with halide ions. Group I metals can form salts with pseudo halides ... . `NaCN, NaOCN` D. `HCOONa, NH_3`
Description : The true statement about solutions of amino acids at physiological pH is (A) All amino acids contain both positive and negative charges (B) All amino acids contain positively charged side chains ... amino acids contain only positive charge (D) All amino acids contain negatively charged side chains
Last Answer : Answer : A
Description : A zwitterion is (a) an ion that is positively charged in solution (b) an ion that is negatively charged in solution (c) a compound that can ionize both as a base and an acid. (d) a carbohydrate with an electrical charge.
Last Answer : a compound that can ionize both as a base and an acid
Description : The true statement about solutions of amino acids at physiological pH is (A) All amino acids contain both positive and negative charges (B) All amino acids contain positively charged side chains ... amino acids contain only positive Charge (D) All amino acids contain negatively charged side chains
Last Answer : (A) All amino acids contain both positive and negative charges
Description : Which of the following is a negatively charged particle of an atom ?
Last Answer : An electron is a negatively charged particle in an atom.
Description : Effective electrolyte to cause the flocculation of a negatively charged arsenium sulphide colloid is :
Last Answer : Effective electrolyte to cause the flocculation of a negatively charged arsenium sulphide colloid is : A. `NaCl` B. ` ... 3)Fe(CN)_(6)` D. `AlCl_(3)`
Description : When negatively charged colloids like `As_(2)S_(3)` sol is added to positively charged `Fe(OH)_(3)` sol in suitable amounts
Last Answer : When negatively charged colloids like `As_(2)S_(3)` sol is added to positively charged `Fe ... colloids. D. They become negatively charged colloids.
Description : Is human blood positively or negatively charged?
Last Answer : Neither, blood is neutral.It does contain both positively and negatively charged ions, butin equal amounts so that they cancel.
Description : If an atom is negatively charged what must have occurred?
Last Answer : This atom has won electrons.
Description : The amino acid which has a pK near 4 and thus is negatively charged at pH 7 is (A) Alanine (B) Glutamic acid (C) Glutamine (D) Aspargine
Description : Consider the following statements: 1. The nuclear forces are short range forces. 2. Alpha rays emitted by a radionuclide are helium nucleus. 3. Gamma rays are electromagnetic waves. 4. Beta rays emitted by a radionuclide are negatively ... 1, 3 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only
Last Answer : Ans:(c)
Description : What particles move around the nucleus of an atom and are negatively charged? (1) Electrons (2) Protons (3) Positrons (4) Neutrons
Last Answer : (1) Electrons Explanation: Circling around outside the nucleus are tiny little particles called electrons. Electrons have a negative charge. Electrons spin as they circle the nucleus billions of times every ... or lose energy, they jump between energy levels as they are rotating around the nucleus.
Description : A good conductor while carrying current is - (1) alternately charged positive and negative (2) negatively charged (3) positively charged (4) electrically neutral
Last Answer : (2) negatively charged Explanation: Electrons carry current in a good conductor of electricity and they are negatively charged. This makes a good electrical conductor negatively charged.
Description : X-rays are – (1) positively charged particles (2) negatively charged particles (3) neutral particles (4) None of these
Last Answer : (3) neutral particles Explanation: Like gamma rays and neutrons, X-rays are electrically neutral. They have neither a positive nor a negative charge. They cannot be accelerated or made to ... particles (electrons and positrons) and heavy charged particles (protons, alpha particles and heavier ions).
Description : A wire carrying current is – (1) positively charged (2) negatively charged (3) neutral (4) charged with a type depending upon current strength
Last Answer : (3) neutral
Description : Which of the following particle being charged negatively?
Last Answer : Electron
Description : SnO2 forms a positively charged colloidal sol in acidic medium and a negatively charged sol in the basic medium. Why ?
Last Answer : Ans. SnO2 is amphoteric in nature. It reacts with acid eg. HCl to form SnCl4 in the solution. The common Sn4+ ions are adsorbed on the surface of SnO2 particles giving them a positive ... solution. The stannate ions are adsorbed on the surface of SnO2 particles giving them a negative charge.
Description : ------are negatively (-) charged particles of an atom? A. Protons B. Neutrons C. Electrons (Answer) D. None of These
Last Answer : C. Electrons (Answer)
Description : When one material is rubbed against the other, then it becomes electrically A. neutral B. charged C. positively charged D. negatively charged
Last Answer : charged
Description : Which of the following activates Hageman factor in blood clotting? B A. Kinins B. Negatively charged surfaces C. Complement C5a D. Positively charged collagen
Last Answer : Negatively charged surfaces
Description : What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis ? (a) The smaller the fragment size, the farther it moves. (b) Positively charged fragments move to farther end. ... charged fragments do not move. (d) The larger the fragment size, the farther it moves.
Last Answer : (a) The smaller the fragment size, the farther it moves
Description : DNA fragments are (a) negatively charged (b) neutral (c) either positively or negatively charged depending on their size (d) positively charged
Last Answer : (a) negatively charged
Description : Given below are four statements pertaining to separation of DNA fragments using gel electrophoresis. Identify the incorrect statements. (i) DNA is negatively charged molecule and so it is loaded on gel towards the anode terminal. (ii) DNA ... (iii) (c) (ii), (iii) and (iv) (d) (i), (ii) and (iv)
Last Answer : (d) (i), (ii) and (iv)
Description : Aerosols present in atmospheric air may be (A) Positively charged (B) Negatively charged (C) Neutral (D) Combination of all (A), (B) & (C)
Last Answer : (D) Combination of all (A), (B) & (C)
Description : X-rays are (A) Positively charged (B) Negatively charged (C) Neutral (D) Of higher wavelength than visible light
Last Answer : C) Neutral
Description : Which one of the following is a flocculating agent for a negatively charged drug? (A) Aluminium chloride (B) Bentonite (C) Tragacanth (D) Sodium biphosphate
Last Answer : (A) Aluminium chloride
Description : Montmorillonite clays adsorb more herbicide as compared to other clays due to a). Expanding lattices b). more surface area c). More negatively charged sites d). All
Last Answer : d). All
Description : What is the criterion for DN A fragments movement on agarose gel during gel electrophoresis ? (1) The smaller the fragment size, the farther it moves (2) Positively charged fragments move to farther ... Negatively charged fragments do not move (4) The larger the fragment size, the farther it moves
Last Answer : (1) The smaller the fragment size, the farther it moves
Description : DNA fragments are: (1) Negatively charged (2) Neutral (3) Either positively or negatively charged depending on their size (4) Positively charged
Last Answer : (1) Negatively charged
Description : A zinc plate is attached to the knob of a negatively charged electroscope. What will happen to the leaves of the electroscope when ultraviolet light is shown on the zinc plate. Will the leaves: w) collapse at once x) gradually come together y) gradually spread further apart z) remain unaffected
Last Answer : ANSWER: X -- GRADUALLY COME TOGETHER
Last Answer : Electrons
Description : X–rays are (1) positively charged particles (2) negatively charged particles (3) neutral particles (4) None of these
Last Answer : neutral particles
Description : A good conductor while carrying current is (1) alternately charged positive and negative (2) negatively charged (3) positively charged (4) electrically neutral
Last Answer : negatively charged