For determination of the age of which among the following is carbon dating method used ? (1) Fossils (2) Rocks (3) Trees (4) 1& 2 above

For determination of the age of which among the following is carbon dating method used ? (1) Fossils (2) Rocks (3) Trees (4) 1& 2 above
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1 Answer

Answer :

1& 2 above
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Radiocarbon dating technique is used to estimate the age of - (1) rocks (2) monuments (3) soil (4) fossils

Description : Radiocarbon dating technique is used to estimate the age of - (1) rocks (2) monuments (3) soil (4) fossils

Last Answer : (4) fossils Explanation: Radiocarbon dating technique is used to estimate the age of fossils. It is used in dating things such as bone, cloth, wood and plant fibers that were created in the relatively recent past by human activities.

Radiocarbon dating is used to estimate the ages of (a) babies (b) fossils (c) rocks (d) ancient buildings

Description : Radiocarbon dating is used to estimate the ages of (a) babies (b) fossils (c) rocks (d) ancient buildings

Last Answer : Ans:(b)

Age of fossils in the past was generally determined by radiocarbon method and other methods involving radioactive elements found in the rocks. More pr

Description : Age of fossils in the past was generally determined by radiocarbon method and other methods involving radioactive elements found in the rocks. More pr

Last Answer : Age of fossils in the past was generally determined by radiocarbon method and other methods ... D. Study of carbohydrates/proteins in fossils

How do geologists use carbon dating to find the age of rocks? -Geography

Description : How do geologists use carbon dating to find the age of rocks? -Geography

Last Answer : To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.

How do geologists use carbon dating to find the age of rocks?

Description : How do geologists use carbon dating to find the age of rocks?

Last Answer : Carbon dating is not used to find the age of rocks. It is usedto date formerly living things. It measures the rate of decay ofthe carbon-14 isotope.

Why can’t fossils be formed in metamorphic rock and only in sedimentary rocks and igneous rocks as they cool?

Description : Why can’t fossils be formed in metamorphic rock and only in sedimentary rocks and igneous rocks as they cool?

Last Answer : vDFYUahereidfiukj

Assertion :- Fossils are always reamins of hard parts of life -forms found only in rocks. Reason :- Rocks are formed due to sediments.

Description : Assertion :- Fossils are always reamins of hard parts of life -forms found only in rocks. Reason :- Rocks are formed due to sediments.

Last Answer : Assertion :- Fossils are always reamins of hard parts of life -forms found only in rocks. Reason :- ... . D. If both Assertion & Reason are false.

The study of fossils in different aed rocks shows all of the following except. :

Description : The study of fossils in different aed rocks shows all of the following except. :

Last Answer : The study of fossils in different aed rocks shows all of the following except. : A. They ... time spans D. They do not present extinct organisms

How rocks fossils and climate provided evidence of continental drift?

Description : How rocks fossils and climate provided evidence of continental drift?

Last Answer : Need answer

Can metamorphic rocks contain fossils?

Description : Can metamorphic rocks contain fossils?

Last Answer : can metamorphic rock contain fosils

Life originated first in the primitive oceans. The evidences supporting this view a. Protoplasm and body fluids of all animals contain salt b. Moist simpler and lower animals are aquatic and marine c. Fossils of earliest animals obtained from rocks of marine origin d. All the above

Description : Life originated first in the primitive oceans. The evidences supporting this view a. Protoplasm and body fluids of all animals contain salt b. Moist simpler and lower animals are aquatic and marine c. Fossils of earliest animals obtained from rocks of marine origin d. All the above

Last Answer : d. All the above

The oldest rocks that contain abundant fossils are: w) Precambrian x) Paleozoic y) Mesozoic z) Cenozoic

Description : The oldest rocks that contain abundant fossils are: w) Precambrian x) Paleozoic y) Mesozoic z) Cenozoic

Last Answer : ANSWER: X -- PALEOZOIC 

Fossils are rarely found in such rocks as: w) limestone x) sandstone y) shale z) granite

Description : Fossils are rarely found in such rocks as: w) limestone x) sandstone y) shale z) granite

Last Answer : ANSWER: Z -- GRANITE

How are fossils formed? Describe, in brief, two methods of determining the age of fossils. -Biology

Description : How are fossils formed? Describe, in brief, two methods of determining the age of fossils. -Biology

Last Answer : When organisms die, their bodies decompose due to action of micro organisms. However, sometime the body or at least some parts of the body may be in such an environment that does not let it ... in deeper layers.By detecting the ratios of different isotopes of the same element in the fossil material.

The age of fossils is dermined by :

Description : The age of fossils is dermined by :

Last Answer : The age of fossils is dermined by : A. analysis of bones B. radioative `c^(14)` dating C. electron microscopy D. weighing the fossils

How are fossils useful in determining the absolute age of rock?

Description : How are fossils useful in determining the absolute age of rock?

Last Answer : What is the answer ?

Age of fossils is calculated by?

Description : Age of fossils is calculated by?

Last Answer : Radiocarbon dating

Which isotope is used to determine the age of fossils ?

Description : Which isotope is used to determine the age of fossils ?

Last Answer : Carbon 14 $

Which among the following is not a non-customs duty obstacle in the world trade? (1) Quantity restriction (2) Establishment of Standard of labour in manufacturing (3) Determination of import duty uniformly (4) Restrictions on goods quality

Description : Which among the following is not a non-customs duty obstacle in the world trade? (1) Quantity restriction (2) Establishment of Standard of labour in manufacturing (3) Determination of import duty uniformly (4) Restrictions on goods quality

Last Answer : (3) Determination of import duty uniformly Explanation: Non-tariff barriers to trade include import quotas, special licenses, unreasonable standards for the quality of goods, bureaucratic delays at customs, ... duty uniformly is comes under the sovereign duty of a nation. It is internal development.

Which among the following is not a non-customs duty obstacle in the world trade ? (1) Quantity restriction (2) Establishment of Standard of labour in manufacturing (3) Determination of import duty uniformly (4) Restrictions on goods quality

Description : Which among the following is not a non-customs duty obstacle in the world trade ? (1) Quantity restriction (2) Establishment of Standard of labour in manufacturing (3) Determination of import duty uniformly (4) Restrictions on goods quality

Last Answer : Determination of import duty uniformly

Test specimen for determination of refractoriness under load (RUL) of a refractory is heated in a (A) Furnace employing neutral atmosphere (B) Carbon resistance furnace (C) Reducing atmosphere (D) Furnace employing negative pressure

Description : Test specimen for determination of refractoriness under load (RUL) of a refractory is heated in a (A) Furnace employing neutral atmosphere (B) Carbon resistance furnace (C) Reducing atmosphere (D) Furnace employing negative pressure

Last Answer : (B) Carbon resistance furnace

Pick out the wrong statement. (A) Exit age description function (E) and internal age distribution function (I) are related as, E = -(dI/dθ) (B) Chemisorption studies are useful in the determination of catalyst surface area and pore size distribution (C) A higher temperature favours the reaction of higher activation energy (D) A catalyst increases the potential energy barrier over which the reactants must pass to form products

Description : Pick out the wrong statement. (A) Exit age description function (E) and internal age distribution function (I) are related as, E = -(dI/dθ) (B) Chemisorption studies are useful in the ... energy (D) A catalyst increases the potential energy barrier over which the reactants must pass to form products

Last Answer : (D) A catalyst increases the potential energy barrier over which the reactants must pass to form products

When is carbon-14 dating impractical?

Description : When is carbon-14 dating impractical?

Last Answer : Carbon 14 dating is only useful up to about 60,000 years because of the half-life of C-14. For example it’s useful for archeological sites. It’s not useful for dating dinosaurs.

Which one of the following is used for dating very old objects of archaeological importance? (1) Phosphorus-31 (2) Tritium (3) Radium (4) Carbon-14

Description : Which one of the following is used for dating very old objects of archaeological importance? (1) Phosphorus-31 (2) Tritium (3) Radium (4) Carbon-14

Last Answer : (4) Carbon-14 Explanation: Radiocarbon dating (usually referred to as simply carbon dating) is a radiometric dating method that uses the naturally occurring radioisotope carbon-14 (140 to estimate the age ... (fraction) of 14C declines at a fixed exponential rate due to the radioactive decay of14C.

Which one of the following is used for dating very old objects of archaeological importance? (1) Phosphorus-31 (2) Tritium (3) Radium (4) Carbon-14

Description : Which one of the following is used for dating very old objects of archaeological importance? (1) Phosphorus-31 (2) Tritium (3) Radium (4) Carbon-14

Last Answer : Carbon-14

What is the name of that system, which uses radioactivity to decide the period of materials of-pre-historic period ? (1) Radium dating (2) Uranium dating (3) Carbon dating (4) Deuterium dating

Description : What is the name of that system, which uses radioactivity to decide the period of materials of-pre-historic period ? (1) Radium dating (2) Uranium dating (3) Carbon dating (4) Deuterium dating

Last Answer : Carbon dating

The element present in the largest amount in rocks and minerals is - (1) carbon (2) silicon (3) hydrogen (4) aluminium

Description : The element present in the largest amount in rocks and minerals is - (1) carbon (2) silicon (3) hydrogen (4) aluminium

Last Answer : (2) silicon Explanation: Silicon is the eighth most common element in the universe by mass, but very rarely occurs as the pure free element in nature. It is most widely distributed in dusts, sands, planetoids, and planets as various forms of silicon dioxide (silica) or silicates.

The technique of calculating the age of fossil organisms is - (1) Radiocarbon dating (2) Electroporation (3) Counting the annual rings (4) Micromanipulation

Description : The technique of calculating the age of fossil organisms is - (1) Radiocarbon dating (2) Electroporation (3) Counting the annual rings (4) Micromanipulation

Last Answer : (1) Radiocarbon dating Explanation: Radiocarbon dating (usually referred to as simply carbon dating) is a radiometric dating method that uses the naturally occurring radioisotope carbon-14 (14C) to ... dating was developed by Willard Libby and his colleagues at the University of Chicago in 1949.

The technique of calculating the age of fossil organisms is (1) Radiocarbon dating (2) Electroporation (3) Counting the annual rings (4) Micromanipulation

Description : The technique of calculating the age of fossil organisms is (1) Radiocarbon dating (2) Electroporation (3) Counting the annual rings (4) Micromanipulation

Last Answer : Radiocarbon dating

In sanger’s method of DNA sequence determination, DNA synthesis is stopped by using (A) 1′, 2′- Dideoxyribonucleoside triphosphates (B) 2′, 3′- Dideoxyribonucleoside triphosphates (C) 2′, 4′- Dideoxyribonucleoside triphosphates (D) 2′, 5′ - Dideoxyribonucleoside triphosphates

Description : In sanger’s method of DNA sequence determination, DNA synthesis is stopped by using (A) 1′, 2′- Dideoxyribonucleoside triphosphates (B) 2′, 3′- Dideoxyribonucleoside triphosphates (C) 2′, 4′- Dideoxyribonucleoside triphosphates (D) 2′, 5′ - Dideoxyribonucleoside triphosphates

Last Answer : Answer : B

Method used for the determination of lime requirement of an acid soil is

Description : Method used for the determination of lime requirement of an acid soil is

Last Answer : Ans. Shoemaker’s method

Which of the following statements about continuous cardiac output monitoring are true? A. Continuous cardiac output monitoring may unmask events not detected by intermittent cardiac output measurements. B. Continuous cardiac output monitoring by the thermodilution method requires continuous infusion of fluid injectate at a constant rate and temperature. C. The major advantage of the Fick method over the thermodilution method of calculating cardiac output is that it is noninvasive, requiring only the determination of oxygen consumption by respiratory gas analysis. D. The technique of thoracic electrical bioimpedance utilizes sensors to determine stroke volume by detecting changes in resistance to a small, applied alternating current.

Description : Which of the following statements about continuous cardiac output monitoring are true? A. Continuous cardiac output monitoring may unmask events not detected by intermittent cardiac output measurements. ... stroke volume by detecting changes in resistance to a small, applied alternating current.

Last Answer : Answer: AD DISCUSSION: Various techniques are available to measure cardiac output continuously. The advantages of continuous cardiac output monitoring, as compared with intermittent methods, are (1) ... function of the stroke volume, which then can be used to calculate the cardiac output

The method of determination of indicated power of multi cylinder SI engine is by use of (a) Morse test (b) Prony brake test (c) Motoring test (d) Heat balance test

Description : The method of determination of indicated power of multi cylinder SI engine is by use of (a) Morse test (b) Prony brake test (c) Motoring test (d) Heat balance test

Last Answer : Ans : a

Pick out the correct statement. (A) The slope of the stripping line is always less than unity (B) For a given separation in a binary distillation column, with increase in reflux ratio (above the minimum reflux ratio), the fixed cost of the distillation column first increases and then decreases (C) In Ponchon-Savarit method of no. of theoretical plate determination, the stripping and rectifying operating lines are vertical at total reflux (D) Kremser-Brown-Souder's equation is used to calculate the efficiency of a plate tower

Description : Pick out the correct statement. (A) The slope of the stripping line is always less than unity (B) For a given separation in a binary distillation column, with increase in reflux ratio ( ... (D) Kremser-Brown-Souder's equation is used to calculate the efficiency of a plate tower

Last Answer : C) In Ponchon-Savarit method of no. of theoretical plate determination, the stripping and rectifying operating lines are vertical at total reflux

Laboratory determination of the diffusivity of vapor is done by __________ method. (A) Wetted wall column (B) Gilliland's (C) Winkelmann's (D) Wike's

Description : Laboratory determination of the diffusivity of vapor is done by __________ method. (A) Wetted wall column (B) Gilliland's (C) Winkelmann's (D) Wike's

Last Answer : (C) Winkelmann's

Experimental determination of __________ is done by wetted wall column method. (A) Diffusion co-efficient (B) Mass transfer co-efficient (C) NTU (D) None of these

Description : Experimental determination of __________ is done by wetted wall column method. (A) Diffusion co-efficient (B) Mass transfer co-efficient (C) NTU (D) None of these

Last Answer : (B) Mass transfer co-efficient

Accurate determination of water content, is made by (A) Calcium carbide method (B) Sand bath method (C) Alcohol method (D) Oven-drying method

Description : Accurate determination of water content, is made by (A) Calcium carbide method (B) Sand bath method (C) Alcohol method (D) Oven-drying method

Last Answer : (D) Oven-drying method

Which of the following methods is best suited for determination of permeability of coarse-grained soils? (A) Constant head method (B) Falling head method (C) Both the above (D) None of the above

Description : Which of the following methods is best suited for determination of permeability of coarse-grained soils? (A) Constant head method (B) Falling head method (C) Both the above (D) None of the above

Last Answer : Answer: Option A

For proper field control, which of the following methods is best suited for quick determination of water content of a soil mass? (A) Oven drying method (B) Sand bath method (C) Alcohol method (D) Calcium carbide method

Description : For proper field control, which of the following methods is best suited for quick determination of water content of a soil mass? (A) Oven drying method (B) Sand bath method (C) Alcohol method (D) Calcium carbide method

Last Answer : Answer: Option D

Which of the following methods is more suitable for the determination of permeability of clayey soil? (A) Constant head method (B) Falling head method (C) Horizontal permeability test (D) None of the above

Description : Which of the following methods is more suitable for the determination of permeability of clayey soil? (A) Constant head method (B) Falling head method (C) Horizontal permeability test (D) None of the above

Last Answer : Answer: Option B

Which of the following methods is most accurate for the determination of the water content of soil? (A) Oven drying method (B) Sand bath method (C) Calcium carbide method (D) Pycnometer method

Description : Which of the following methods is most accurate for the determination of the water content of soil? (A) Oven drying method (B) Sand bath method (C) Calcium carbide method (D) Pycnometer method

Last Answer : Option A

Depreciation (A) Costs (on annual basis) are constant when the straight line method is used for its determination (B) Is the unavoidable loss in the value of the plant, equipment and materials with lapse in time (C) Does figure in the calculation of income tax liability on cash flows from an investment (D) All (A), (B) and (C)

Description : Depreciation (A) Costs (on annual basis) are constant when the straight line method is used for its determination (B) Is the unavoidable loss in the value of the plant, equipment and materials with lapse in time ... income tax liability on cash flows from an investment (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

For determination of average annual precipitation in a catchment basin, the best method is (A) Arithmetical method (B) Thiessen's mean method (C) Isohyetal method (D) None of these

Description : For determination of average annual precipitation in a catchment basin, the best method is (A) Arithmetical method (B) Thiessen's mean method (C) Isohyetal method (D) None of these

Last Answer : Answer: Option C

In the method of voids for determination of the quantity of cement paste, it is assumed that (A) Voids in coarse aggregates are filled by fine aggregates (B) Voids in fine aggregates are filled by the cement paste (C) Volume of fine aggregates is equal to total voids in coarse aggregates plus 10% extra (D) All the above

Description : In the method of voids for determination of the quantity of cement paste, it is assumed that (A) Voids in coarse aggregates are filled by fine aggregates (B) Voids in fine aggregates are filled by ... of fine aggregates is equal to total voids in coarse aggregates plus 10% extra (D) All the above

Last Answer : Answer: Option D

Which of the following correspond to the recommendations of IRC for pavement thickness determination by CBR Method ? 1. CBR tests are to be conducted in-situ 2. Static compression is best adopted 3. The top 50 cm of sub grade should be compacted to as near the proctor density as possible (a) 1, 2 and 3 (b) 1 and 2 only (c) 2 and 3 only (d) 1 and 3 only

Description : Which of the following correspond to the recommendations of IRC for pavement thickness determination by CBR Method ? 1. CBR tests are to be conducted in-situ 2. Static compression is best adopted 3. The top 50 cm of sub grade ... 1, 2 and 3 (b) 1 and 2 only (c) 2 and 3 only (d) 1 and 3 only

Last Answer : (c) 2 and 3 only

Which of the following methods are employed for determination of free and combined chlorine residuals in water ? 1. Starch-iodide method 2. Orthotolidine method 3. Amperometric titration method 4. SNORT method 5. DPD method a) 1, 2, 4 and 5 b) 1, 2 and 3 only c) 3, 4 and 5 only d) 2, 3, and 4 only.

Description : Which of the following methods are employed for determination of free and combined chlorine residuals in water ? 1. Starch-iodide method 2. Orthotolidine method 3. Amperometric titration method 4. SNORT method 5. DPD method a) 1, 2, ... b) 1, 2 and 3 only c) 3, 4 and 5 only d) 2, 3, and 4 only.

Last Answer : a) 1, 2, 4 and 5

State the procedure for the determination of water content by oven-drying method.

Description : State the procedure for the determination of water content by oven-drying method.

Last Answer : i) This is commonly adopted and simplest method for determination of water content of a soil sample in the laboratory. ii) The method basically consists of drying a weighed moist sample of soil in an oven ... The above table gives the minimum quantity of soil sample to be taken for test.  

Explain the method of determination in-situ density with a core-cutter.

Description : Explain the method of determination in-situ density with a core-cutter.

Last Answer : Dry unit weight of soil (γd) :The dry unit weight (γd) is the weight of solids (Ws) per unit of its total volume (V) (prior to drying) of the soil mass. (γd) = Ws/ V Procedure ... content determination. -Repeat the test at two or three locations nearly and get the average dry density

Amniocentesis is a method for : (1) determination of foetal health conditions (2) determination of the amino acids sequence (3) inducing abortion (4) artificial insemination

Description : Amniocentesis is a method for : (1) determination of foetal health conditions (2) determination of the amino acids sequence (3) inducing abortion (4) artificial insemination

Last Answer : determination of foetal health conditions

Describe the procedure for determination of workability by compaction factor method.

Description : Describe the procedure for determination of workability by compaction factor method.

Last Answer : Procedure for determination of workability by compaction factor method: The procedure of determining the workability of concrete using compaction factor as per IS: 1199-1959 is as follows. 1. Take the freshly ... upon calculated C.F., the degree of workability can be designated as follows.