Description : Which gas enters the bloodstream through the lungs binds to hemoglobin and reduces the amount of exygen that reaches the body's organs and tissues?
Last Answer : Carbon monoxide
Description : At the muscle end-plate, d-tubocurarine reduces the: A. Number of Na+ channels B. Duration for which the Na+ channels remain open C. Ion conductance of the open Na+ channel D. Frequency of Na+ channel opening
Last Answer : D. Frequency of Na+ channel opening
Description : Pick up the correct statement from the following: (A) The quality of water governs the strength of concrete (B) 10% excess of water reduces the strength of concrete by 15% (C) 30% excess of water reduces the strength of concrete by 50% (D) All the above
Last Answer : Answer: Option D
Description : Which of the following statement(s) is/are true concerning carbon dioxide kinetics? a. The amount of carbon dioxide produced is equivalent to the amount of oxygen consumed b. Carbon dioxide levels ... tissues d. The amount of carbon dioxide excreted is a function of ventilation of perfused alveoli
Last Answer : Answer: a, c, d The total amount of carbon dioxide produced by systemic metabolism is roughly equivalent to the amount of oxygen consumed (100-120 cc/m2/min, 200 cc/min in a typical ... carbon dioxide excreted is a function of ventilation of perfused alveoli (i.e. the alveolar ventilation/min).
Description : Pick up the correct statement from the following: (A) Adding 5% to 6% of moisture content by weight, increases the volume of dry sand from 18% to 38% (B) The bulking of fine sand is ... the percentage content of moisture exceeds 10%, increase in bulk of sand starts increasing (D) All the above
Description : Transports of mineral by ion exchange. -Biology
Last Answer : answer:
Description : The keyway, (A) Reduces strength of shaft (B) Reduces rigidity of shaft (C) Increases stress concentration (D) All of above
Last Answer : (D) All of above
Description : Which of the following reduces the stress concentration? a) Use of multiple notches b) Drilling additional holes c) Removal of undesired material d) Each of the mentioned
Last Answer : d) Each of the mentioned
Description : Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N2 in contaminated air at ... asphyxiate is ≥ __________ percent. (A) 84 (B) 88 (C) 80 (D) 92
Last Answer : (A) 84
Description : A reduction of nitrogen nutrient in plants: (A) Affects leaf colour (B) Reduces pigment concentration (C) Increase the visible reflectivity (D) All of these
Description : Use of telecast materials (a) Enhances concentration and learning (b) Reduces the burden of the teacher (c) Increases retention power (d) all of the above
Last Answer : (d) all of the above
Description : Injection of adrenaline along with a local anaesthetic serves the following purpose: A. Lowers the concentration of the local anaesthetic to produce nerve block B. Prolongs the duration of local anaesthesia C. Increases the anaesthetised area D. Reduces the local toxicity of the local anaesthetic
Last Answer : B. Prolongs the duration of local anaesthesia
Description : Use of telecast materials Options: A) enhances concentration and learning B) reduces the burden of the teacher C) increases retention power D) all of the above
Last Answer : A) enhances concentration and learning
Description : How different are oxyhemoglobin and hemoglobin?Where is it expected to find a higher concentration of oxyhemoglobin, in peripheral tissues or in the lungs?
Last Answer : Oxygen-bound hemoglobin is called oxyhemoglobin. In the lungs the oxygen concentration is higher and so there is a higher oxyhemoglobin concentration. In the peripheral tissues the situation is the ... lower and there is more free hemoglobin. The Circulatory System - Image Diversity: oxyhemoglobin
Description : Indicate the drug which attains therapeutic antibacterial concentration in the urinary tract but not in other tissues: A. Pefloxacin B. Amikacin C. Nitrofurantoin D. Cephalexin
Last Answer : C. Nitrofurantoin
Description : 'Diffusion hypoxia’ is likely to occur only after use of nitrous oxide because it: A. Is a respiratory depressant B. Has low blood solubility and is used in high concentration C. Is a very potent anaesthetic D. Interferes with diffusion of oxygen into the tissues
Last Answer : B. Has low blood solubility and is used in high concentration
Description : Low concentration of bupivacaine is preferred for spinal / epidural obstetric analgesia because: A. It has a longer duration of action B. It can produce sensory blockade without paralysing abdominal muscles C. ... in maternal tissues so that less reaches the foetus D. All of the above are correct
Last Answer : D. All of the above are correct
Description : In which the following factors can interfere in binding of `O_(2)` with haemoglobin. `A-P_(CO_(2))` `B-H^(+)` ion concentration C-Temperture
Last Answer : In which the following factors can interfere in binding of `O_(2)` with haemoglobin. `A-P_(CO_(2))` `B-H^(+)` ion ... A B. B,C C. A and C D. A,B,C
Description : What concentration of `Ag^(+)` ions will be in equilibrium with a saturated solution containing a precipitate of `Ag_(2)CrO_(4) and CrO_(4)`-ion conce
Last Answer : What concentration of `Ag^(+)` ions will be in equilibrium with a saturated solution containing a precipitate of ... D. `5.9xx10^(-6)` moles per litre
Description : Chemoreceptors for `CO_(2)` and `H^(+)` ion concentration are present in :-
Last Answer : Chemoreceptors for `CO_(2)` and `H^(+)` ion concentration are present in :- A. Arteries and ... and veins and medulla D. Vein and pons and medulla
Description : What is the relationship between the pH and in hydrogen ion concentration?
Last Answer : The pH is the cologarithm of concentration (more correct activity) of hydrogen ions in a solution.
Description : What is a chemical system that prevents changes in hydrogen ion concentration?
Last Answer : This is called a buffer system. It resists changes in [H+]concentration, which is the same as saying it resists changes inpH.
Description : Which ion increases in concentration when a strong is base added to water?
Last Answer : Hydroxide ion (OH-)
Description : In a solution having a pH of 7.4, the hydrogen ion concentration is (A) 7.4 nmol/L (B) 40 nmol/L (C) 56 nmol/L (D) 80 nmol/L
Last Answer : Answer : B
Description : The negative logarithm of H+ ion concentration
Last Answer : Ans. Soil pH
Description : PH is the negative logarithm of the hydrogen Ion Concentration express4ed in moles/liter of aqueous solution. PH of buffer solution is calculated by. Henderson's equation Name the best ... Chemical kinetics deals with study of. Rates and mechanisms of chemical and Biochemical reactions
Last Answer : What does Thermodynamics helps in predicting ?
Description : An emf of the order of mV is generated when two solutions of different hydrogen ion concentration are separated by a thin glass wall". This is the working principle of a (A) pH meter (B) Polarimeter (C) Chromatograph (D) Polarograph
Last Answer : (A) pH meter
Description : Compared with intracellular fluid, extracellular fluid has, a. a greater osmolarity b. a higher protein concentration c. a lower chloride ion concentration d. a lower hydrogen ion concentration
Last Answer : a lower hydrogen ion concentration
Description : Which ion is found in greater concentration inside the cell a. K b. Na c. Cl d. HCO3
Last Answer : K
Description : Which ion is found in greater concentration outside the cell a. K b. Na c. Cl d. HCO3
Last Answer : Na
Description : The ratio of oxygen available to the oxygen required for stabilisation of sewage is called the (A) Bacterial stability factor (B) Relative stability (C) Biological oxygen demand (BOD) (D) Oxygen ion concentration
Last Answer : (B) Relative stability
Description : Hydrogen ion concentration in distilled water is (A) 10 -7 (B) 7 × 10 -7 (C) 10 7 (D) 7 × 10 7
Last Answer : (A) 10 -7
Description : Pick up the incorrect statement from the following: (A) The pH value of water indicates the logarithm of reciprocal of hydrogen ion concentration in water (B) Higher value of pH ... value of pH means higher hydrogen ion contraction (D) Lower value of pH gives alkaline solution
Last Answer : (D) Lower value of pH gives alkaline solution
Description : The concentraction of hydrogen ion (H+ )is denoted by pH.How do you denote concentration of hydrogen ion(OH)?
Last Answer : Ans:The concentration of hydrogen ion (OH) is denoted by poH.
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
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 : hat is/are the consequence(s) of myocardial Na+ K+ ATPase inhibition by digoxin: A. Increased intracellular Na+ ion concentration B. Increased cytosolic Ca2+ ion concentration C. Increased intracellular K+ ion concentration D. Both ‘A’ and ‘B’ are correct
Last Answer : D. Both ‘A’ and ‘B’ are correct
Description : pH is defined as the negative logarithm of the hydrogen ion concentration. Comparing a pH 5 and a pH 8 solution, which of the following is true? w) There are 1,000 times more hydrogen ions in ... . z) Cannot tell the difference between these two solutions by pH, since the numbers are so close.
Last Answer : ANSWER: X -- THERE ARE 1,000 TIMES MORE HYDROGEN IONS IN THE PH 5 SOLUTION
Description : In a DNA molecule the thymine concentration is 30%, the guanosine concentration will be (A) 10% (B) 20% (C) 30% (D) 40%
Description : An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is: (A) 9.21 (B) 4.605 (C) 100 (D) 0.001
Last Answer : (B) 4.605
Description : With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct? (a) Increasing atmospheric CO2 concentration up to 0.05% can enhance CO2 fixation rate. ( ... for higher yield. (d) Light saturation for CO2 fixation occurs at 10% of full sunlight.
Last Answer : (b) C3 plants respond to higher temperature with enhanced photosynthesis while C4 plants have much lower temperature optimum
Description : Pick out the wrong statement. (A) Wine, rum & Vodka are prepared by the formulation of fruit juice, sugar beet & rye respectively (B) Protein catalysts are called enzymes (C) The rate ... concentration of reactants at high concentration of enzymes (D) Total sugar content in molasses is about 10%
Last Answer : (D) Total sugar content in molasses is about 10%
Description : The concentration of agar to obtain semi solid media is A- 1.5-20%B- 0.5% or less C- >10% D- 10%but
Last Answer : 0.5% or less
Description : The concentration of Fluoride in the topical NaF A. 2% B. 5% C. 8% D. 10%
Last Answer : B. 5%
Description : With reference to factors affecting the rate of photosynthesis, which of the following statements is not correct ? (1) Increasing atmospheric CO 2 concentration up to 0.05% can enhance CO 2 fixation ... for higher yield (4) Light saturation for CO 2 fixation occurs at 10% of full sunlight
Last Answer : (2) C 3 plants respond to higher temperatures with enhanced photosynthesis while C 4 plants have much lower temperature optimum
Description : Which of the following statement(s) is/are true concerning the clinical management of an open wound? a. A wet-to-dry dressing is the most optimal form of wound management ... wound facilitates healing d. Irrigation of the wound disrupts epithelialization therefore inhibiting the healing process
Last Answer : Answer: b Epithelialization is more rapid under moist conditions than dry conditions. Without dressings, a superficial wound, or one with minimal devitalized tissue forms a scab or ... dysfunction, increases the distance for diffusion from oxygen and nutrient sources to their metabolic targets
Description : Give reason: a) Soda bottles are often labelled “store in cool and dry place”. b) Balloons pops out during hot summer more frequently than in winter. c) During winter football filled with air reduces to its original size when taken outdoors.
Last Answer : a) Soda bottles are often labelled store in cool and dry place . The carbon dioxide filled in soda bottles on exposure to heat, expands because the gas inside the bottle expands as temperature ... . When football is taken out, its temperature decreases so the volume to gas filled also decreases.
Description : Pick up the correct statement from the following: (A) The dry density reduces by addition of water after attaining optimum moisture content (B) The line joining the peak of three moisture content graphs ... be compacted to a very high density as compared to fine grained soils (D) All the above
Description : Dry rot (A) Cracks the timber (B) Reduces the strength of timber (C) Reduces the timber to powder (D) Spoils the appearance of timber
Last Answer : Answer: Option C
Description : Due to attack of dry rot, the timber (A) Cracks (B) Shrinks (C) Reduces to powder (D) None of these