Showing posts with label CURRENT AFFAIR 2013. Show all posts
Showing posts with label CURRENT AFFAIR 2013. Show all posts

Monday, May 27, 2013

Current Affairs April 2013



Q.1 Total Cities under Phase-II Digitization of Cable TV, which completed on 31st March 2013 was ?
A. 40 Cities
B. 42 Cities
C. 38 Cities
D. 30 Cities
Ans: C ( 38 cities includes Jodhpur, Jaipur from Rajasthan )

Q2. Winner of Miami Masters 2013 is ?

A. R. Federer
B. Nadal
C. Andy Murray
D. Leander paes
Ans: C

Current Affairs May 2013


Q.1 Which bollywood star named SAARC ambassadors for HIV/AIDS ?
A. Ajay Devgan
B. Aishwarya Roy Bachchan
C. Vidya Balan
D. Amitabh Bachchan
Ans: A

Q.2 Total No. of assembly seats in Karnataka is ?
A. 200
B. 220
C. 223
D. 225
Ans: C
Q.3 Summer festival is held in ?
A. Jaipur
B. Mount abu
C. Ajmer
D. Jaisalmer
Ans: B

Q.4 Which badminton players wins Grand Prix Gold title 2013 in Malaysia ?

A. P V Sindhu
B. Saina Nehwal
C. Jwala Gutta
D. Sania Mirza
Ans: A

Q. 5The best film award in 60th National Film Awards (NFA) 2012 is given to ?
A. Dabaang
B. Barfi
C. Paan Singh Tomar
D. Samhita
Ans: C

Q. 6 Which bollywood star named in 66th Cannes Film Festival's nine-member jury ?
A. Amitabh Bachchan
B. Aishwarya Roy Bachchan
C. Vidya Balan
D. Shekar Kapoor
Ans: C

Thursday, January 17, 2013

General Science quiz for Competitive Exams

1. Who among the following received Nobel prize for unraveling the helical structure of Protein ?
A. Linus pauling
B. Maurice Wilkins
C. Sanger
D. Watson and Crick
Ans: A

2. Red-rot and Ergot disease are associated with the Production of:
A. Bajra and wheat
     B. Groundnut and sugarcane 
     C.Wheat and groundnut
     D.Sugarcane and Bajra
     Ans: D


3. Which one of the following disease is caused by bacteria ?
A. Hepatitis B
B. Poliomyelitis
C. Scabies
D. Tuberculosis
Ans: D
4. Which one of the following is vector for KALA-AZAR disease ?
A. Housefly
B. Sandfly
C. Aedes mosquito
D. Anopheles Mosquitos
Ans: B
5. In terms of organic evolution, which one of the following is more advanced than the other three ?
A. Bat
B. Pigeon
C. Ostrich
D. Vulture
Ans: A
6. Night blindness can be corrected by the intake of ?
A. Vitamin A
B. Vitamin B Complex
C. Vitamin C
D. Vitamin D
Ans: A
7. Which one of the enzymes is found in human saliva ?
A. Trypsin
B. Pepsin
C. Ptyalin
D. Rennin
Ans: C
8.Which one of the following element is essential for the transmission of Nerve impulses in nerve fibers of Human body ?
A. Calcium
B. Iron
C. Sodium
D. Zinc
Ans: C
9. In the human body, the red blood cells are produced in ?
A. Liver
B. Voluntary Muscles
C. Pancreas
D. Bone marrow
Ans: D
10. The purpose of Genetically modifying brinjal and cotton as Bt-Brinjal, Bt-Cotton was to make them ?
A. Drought resistant
B. High yielding
C. Pest resistant
D. Short-duration crops
Ans: C
11. The Scientists recently estimated the age of the moon around ----- Billion years.
A. 4.36
B. 3.36
C. 5.34
D.7.54
Ans: A
12. Which of the following are infected by foot and mouth disease ?
A. Cats
B. Cattle
C. Dogs
D. Poultry
Ans: B

13. Which one of the following kinds of organism causes maleria ?
A. Bacterium
B. Fungus
C. Protozoan
D. Virus
Ans: C
14. Which among the following is poorest source of Fat ?
A. Curd
B. Egg
C. Fish
D. Milk
Ans: C
15. The release of which one of the following into Ponds and wells helps in controlling mosquitoes ?
A. Crab
B. Gambusia Fisha
C. Dogfish
D. Snail
Ans: B

16. Which one of the following crop improvement technique is based on the concept of Cellular Totipotency in plants
A. Polyploid
B. Tissue Culture
C. Induced Culture
D. Hybridisation
Ans: B
17. The high milk yielding breed of cow developed in India through cross breeding is ?
A. Haryana
B. Red sindhi
C. Murrah
D. Holstein-Friesian
Ans: B  
18. Zoological Survey of India Planned to Establish Five DNA Laboratories in India. Which one of the following cities is not included in its planned list?
A.New Delhi
B. Chennai
C. Kolkata
D. Pune
Ans:A
19. If the drinking water supply pipeline is damaged and is contaminated with domestic sewerage. which one of the following disease is most likely to occur ?
A. Measles
B. Typhoid
C. Tuberculosis
D. Diphtheria
Ans: B
20. Which scientist disapproved the theory of spontaneous generation and performed the experiment to show "Life begets life" ?
A. Alexander flemin
B. Joseph Lister
C. Louis pasteur
D. Linus Pauling
Ans: C


21. The folding of the leaf lobes of the Venus flag trap is a response to changing ?
A. Light pattern
B. Water pressure
C. Wind speed
D. Wind direction
Ans: B
22. One of most important foreign exchange earning herbs used in the treatment of several kinds of chronic dysentery is ?
A. Tulsi
B. Isabgol
C. Madhuca
D. Rauwoldia
Ans: B
23. Which one of the following is the most suitable plant for reclamation of alkaline soil ?
A. Eucalyptus
B. Pipal
C. Coconut
D. Kikar
Ans: C
24. The crop in which Bt Gene has been used for genetic transformation and which has given rise o a controversy in India is ?
A. Cotton
B. Wheat
C. Groundnut
D. Tomato
Ans: A
25. Children confined to closed dark rooms are most likely to suffer from ?
A. Goitre
B. Anaemia
C. Pallagra
D. Bone deformation
Ans: B
26. Fish and sea foods are very rich in ?
A. Magnesium
B. Iron
C. Calcium
D. Sodium
Ans: D
27. WIDAL test is required for the diagnosis of ?
A. Tuberculosis
B. Tenanus
C. Typhoid
D. Leprosy
Ans: C
28. Which one of the following is known as first line of defence for the body ?
A. WBC
B. antibodies
C. Skin
D. Nails
Ans: C
29. The yellow color of Yolk is due to the presence of ?
A. Livetin
B. Phosphate
C. Riboflavin
D. Vitellin
Ans; C
30. The slurry of biogas plant is an enriched manure as it is vary rich in oxygen ...
A. Phosphorus and Potassium
B. Sulphur and Nitrogen
C. Zinc and Aluminum
D. Boron and Potash
Ans: B
31. The most economical process of increasing the nutritive value of foodgrains is ?
A. Germination
B. Milling
C. Parboiling
D. Pearling
Ans:B
32.GOUT, a metabolic disease occues due to the high level of ?
A. Uric acid in the blood
B. Urea in the blood
C. Sugar in the blood
D. Cholestrerol in the blood
Ans:A
33. Which one of the following is NOT correctly matched ?
A. Becquerel: Radioactivity
B. Alexander Fleming: Penicillin
C. Louis Pasteur: Blood group
D. William Harvey: Blood circulation
Ans: C
34. PCR (Polymerase chain reaction) is a technique to make copies of ?
A. DNA Using livin cells
B. DNA Without using living cells
C. RNA using living cells
D  RNA without using living cells
Ans: A
35. The branch of science dealing with the improvement of human race is ?
A. Genealogy
B. Cloaning
C. Eugenics
D. Euphenics
Ans: C
36. The main pollination agent in the case of maze plant is ?
A. Bird
B. Insects
C. Rodent
D. Winds
Ans: D
37. Spiders and scrpions belongs to the same class of Antropods as are ?
A. Beetle  and locusts
B. Crabs and Lobsters
C. Centipedes and Millipedes
D. Mites and Ticks
Ans: D
38. With reference to the plants, mucilage are ?
A. Glycoproteins
B. Polypeptides chains
C. Polysachhairides
D. Long chain fatty acids
Ans: A
39. Azolla used as a bio-fertilizer for rice cultivation has a symbolic relationship with ?
A. Azaotobacter
B. Azospirillum
C. Aulosira
D. Anabaena
Ans: D
40.Diatom are good indicator of:
A. Industrial pollution
B. Intense soil erosion
C. Sewae pollution
D. Soil Pollution
Ans: C
41. Which one of the following theories is most widely accepted for movement of water through plants ?
A. Capillarity
B. Cohesion tension
C. Imbibition
D. Root pressure.
Ans: D 
42.Which one of the following organisms has a role in converting nitrates to free Nitrogen ?
A. Pseudomonas
B. Nitrosomonas
C. Ntrobacter
D. Rhizobium
Ans:A
43. The human body cowper's gland is associated with ?
A. Circulatory system
B. Digestive system
C. Nervous system
D. Urino-genital system
Ans: D
44. Which type of light is effective for Photosynthesis to occur ?
A. Ultraviolet and blue
B. Blue and red
C. Green and Yellow
D. Blue and Green
Ans: B
45. Which one of the following enzymes can hydrolyze proteins in the stomach ?
A. Trypsin
B. Pepsin
C. Lipase
D. Amylase
Ans: B
46.  In human body the blood enters the aorta of the circulartory system from the ?
A. Left artium
B. Left Ventricle
C. Right atrium
D. Right Ventricle
Ans: B
47. Which is iodine-deficienty disease ?
A. Arthritis
B. Goitre
C. Glucoma
D. Pneumonia
Ans: B
48. Which oil is least recommended for high blood pressure person ?
A. Coconut oil
B. Groundnut oil
C. Mustand Oil
D. Sunflower Oil
Ans: C
49. Which Nutrients plays a important role in Coagulation of Blood ?
A. Calcium
B. Iron
C. Potassium
D. Sodium
Ans: A
50. Which one of following vitamins can be synthesized by human body ?
A. Vitamin B1
B. Vitamin B12
C. Vitamin C
D. Vitamin D
Ans: D
51. What is the process responsible for producing photons in a diode laser?
A. Fermi level shift
B. Majority carrier injection
C. Carrier freeze out
D. Electron-hole recombination
Ans: D
52. Which variety of coal contains the highest percentage of carbon?
A. Anthracite
B. Peat
C. Bituminous
D. Lignite
Ans: A
53. What is the main component of biogas and natural gas?
A. Ethane
B. Methane
C. Propane
D. Butane
Ans: B
54. What is dry ice?
A. Liquid nitrogen
B. Water ice
C. Solid carbon dioxide
D. Frozen ethanol
Ans: C
55. Nail polish remover contains mainly ?
A. Methanol
B. Ethanol
C. Acetone
D. Limonene
Ans: C
56. Which of the following measurements is not a unit of distance?
A. Ammeter
B. Cubit
C. Parsec
D. Angstrom
Ans: A (An ammeter is a device that measures the current in an electric circuit, the amount of charge per unit time through a point of reference)
57. Who discovered X-rays?
A. Land
B. Roentgen
C. Eastman
D. Kodak
Ans: B
58. What is defined as the change in velocity over time?
A. Acceleration
B. Speed
C. Work
D. Force
Ans: A
59. Which one of the following is caused by virus ?
A. Cholera
B. Influenza
C. Scabies
D. Typhoid
Ans: B
60. Which one of the following elements is required by the human body for the hardening of Bones and teeth ?
A. Iodine
B. Iron
C. Phosphorus
D. Potassium
Ans: C
61. Which one of the following is not caused by Nutritional deficienty ?
A. Kwashiorkor
B. Haemophilia
C. Beriberi
D. Marasmus
Ans: B
62. Chemically, what is Sname Venom ?
A. Glycolipid
B. Polysacchride
C. Protein
D. Steroid
Ans: C
63. The root of which one of following plants contain the bacteria that convert free Nitrogen to Nitrates used by plants ?
A. Mustand
B. Pea
C. Sugarcane
D. Wheat
Ans: B
64. Which one among following is rich in protein ?
A. Boiled rice
B. Brea of Wheat
C. Fried Potato Chips
D. Fried Gram
Ans: D
65. Which part of Potato plant is used as Vegetable ?
A. Modified root
B. Modified stem
C. Modified leaf
D. Modified flower
Ans: B
66. Mashrooms are actually ?
A. Algae
B. Fungi
C. Lichens
D. Parasitic moss plant
Ans: B
67. All Enzymes are actually ?
A. Protein
B. Carbohydrates
C. Fatty acids
D. Sterols
Ans: A
68. Among the following fruits, which one is not a True fruits ?
A. Apple
B. Tomato
C.Coconut
D. Date
Ans: A 
69. In which oran of the human body is Ammonia converted into Urea ?
A. Kidney
B. Liver
C. Pancreas
D. Spleen
Ans: B
70. Who saw the cells for the first time in the thin slice of Cork using his crude Mircoscope ?
A. August Weismann
B. Louis Pasteur
C. Robert Brown
D. Robert Hooke
Ans: D
71. Which one of the following is a pigment ?
A. Albumin
B. Elastin
C. Keratin
D. Melanin
Ans: D
72. Which of the following is biodegradable?
A. D.D.T.
B. Paper
C. Plastic
D. Aluminium
Ans: B     
73. Electrostatic precipitation is used to control ?
A. Water pollution
B. Solid waste
C. Noise pollution
D. Air pollution
Ans: D
74. X-rays were discovered by -
A. Roentgen
B. H.Davy
C. Lavoisier
D. Faraday
Ans: A
75. Where was India's first computer installed?
A. Indian Statistical Institute, Calcutta
B. Indian Institute of Technology, Delhi
C. Indian Institute of Science, Bangalore
D. Bharat Sanchar Nigam Ltd, Delhi
Ans: A
76. Centre for DNA Finger printing of India is located at-
A. Pune
B. Hyderabad
C. Mumbai
D. Udaipur
Ans. B
77. The audible range of sound is-
A. 20 Hz to 20 MHz
B. 20 Hz to 20 kHz
C. 20 kHz to 20 MHz
D. 20 Hz to 2000 Hz
Ans. B
78. The nephron is:
A. The site of urine storage.
B. The functional unit of the kidney.
C. The site where ADH is produced.
D. Also called the Bowman's capsule.
Ans. B
79. All of the following are normally found in urine except-
A. Glucose
B. Sodium ions
C. Uric acid
D. Urea
Ans. A
80. Which Salt is used in photography?
A. Phosphorus Nitrate
B. Silver Nitrate
C. Sodium Nitrate
D. Sodium Chloride
Ans. B
81. In elephants, which teeth are grow into huge tusks?
A. Incisors of the lower jaw
B. Canines of the upper jaw
C. Incisors of the upper jaw
D. Molars of the lower jaw
Ans. C
82. Tip of the match-stick contains-
A. Phosphorus penta oxide
B. White phosphorus
C. Red phosphorus
D. Phosphorus penta chloride
Ans. C
83. Commercial name of Sodium bicarbonate is-
A. Washing soda
B. Baking soda
C. Bleaching powder
D. Soda ash
Ans. B
84. Which lands in human body produced growth Harmon ?
A. Adrenal
B. Pancreas
C. Pitutary
D. Thyroid
Ans: C
85. From evolutionary point of view which one f the following is more advances ?
A. Crocodile
B. Dolphin
C. Shark
D. Tortoise
Ans: B
86. Which one of the following Mineral is required for muscle contraction ?
A. Calcium
B. Iron
C. Sodium
D. Zinc
Ans: A
87. What is key ingredient of Vinegar that you use in diet ?
A. Acetic acid
B. Ascorbic acid
C. Benzoic Acid
D. Nicotinic Acid
Ans: C
88. Which of the following receives message from hypothalmus and communicates with other endocrine glands ?
A. Pituitary
B. Thyroid
C. Pancreas
D. Thymus
Ans: A
89. The part of grain in cereals, where much of the protein lies is the ?
A. Aleurone layer
B. Lendosperm
C. Pericarp
D. Embryo
Ans: A
90. In which part of human body is the smallest bone found ?
A. Wrist
B. Palm
C. Nose
D. Ear
Ans:D
91. Primarily which one of the following system of the body is attacked by HIV ?
A. Cardiovascular
B. Immune
C. Respiratory
D. Reproductive
Ans: B
92. Which one of the following is a stem tissue ?
A. Carrot
B. Cactus
C. Ginger
D. Flower
Ans: B
93. Vaccines are ?
A. Same as monoclonal antibodies
B. Treated bacteria or virus or one of their protein
C. mhc protein
D. Strands of nucleic acid
Ans: B
94. Which one of the following is used as antibacterial dye for skin infection ?
A. Barium
B. Cobalt
C. Gentian violet
D. Nicotinamide
Ans: C
95. Tricuspid valve is found in ?
A. Brain
B. Heart
C. Spleen
D. Veins
96. In India, the human organ transplantation act come into existence in ?
A. 1994
B. 1995
C. 1996
D. 1997
Ans: B
97. Which one of following algae is a wonder crop with about 70% protein, even more than Soyabean ?
A. Chlorella
B. Dunaliella
C. Scenedesmus
D. Spirulina
Ans: D
98. The science dealing with Human variations and heredity leading to the improvement of human race is known as ?
A. Eugenics
B. Genetics
C. Hybridization
D. Mutation
Ans: A
99. The part of poppy plant which yields opium is ?
A. Dried root
B. Dried leaves
C. Dried seeds
D. Unripe fruits
Ans: D
100. Vitamin A is also known as ?
A. Ascorbic acid
B. Retinol
C. Thiamine
D. Riboflavin
Ans: B

Sunday, December 23, 2012

Geographical background of Rajasthan


 With the geographic area of 342,239 square kilometers, Rajasthan has become geographically the largest state in India acquiring almost 11% of the total Geographical area of India, after the formation of Chattisgarh as separate state in 2000. Prior to this Madhya Pradesh was recognized as the largest state in terms of area. 

Located at 23º30´ and 30º 11’ North latitude and 69º 29’ and 78º 17’ East longitude. Adjacent to west and northwest to the boundaries of Pakistan, Rajasthan is surrounded by the states of Punjab, Haryana and Uttar Pradesh in north and north east, Uttar Pradesh and Madhya Pradesh, in its east and south east, and by the state of Gujarat in south west.The capital of state is Jaipur, also known as Pink City and  The tropic of cancer passes through its southern district Banswara.

The huge portion of land is acquired by the biggest Indian desert – The Thar Desert also known as Maru-Kantar. The oldest range of mountains the Aravalli mountains separates the into two zones the desert zone on one side and forest on the other. Mount Abu is the hilly visiting destination in the state and Gurushikhar as the highest peak of Arvalli range of mountains.

Topographically the larger portion of the state is dry region. Rajasthan is blessed with all three features of mountains, plateaus and plains. In wider terms the topography of Rajasthan can be divided into three main broad categories the Aravalli or the Hilly regions, the Thar and the other arid regions, the Plateaus of Vindhaya and the Malwa, the Fertile plains in  the Mewar, the Forest Regions and the Water resources including Rivers and Salt Lakes.

The versatility of soil is found in Rajasthan. The different category of soil is sandy, saline, alkaline and chalky (calcareous). Clay, loamy, black lava soil and nitrogenous.

Due to deserted area the rainfall is low and rare. However, food crops are grown in the plain areas with the help of rivers, canals and watershed programmes.

Rajasthan enjoys the pleasure of all weather conditions. Temperature in winder ranges from 8° to 28° C (46° to 82° F) and in summer from 25° to 46° C (77° to 115° F). The average rainfall also differs the western region has almost 100 mm (about 4 in) annually, where as  the southeastern part of the state receives 650 mm (26 in) annually, most of which falls from July through September during the monsoon season.

It shares its north-western and western boundary with the Indo-Pakistan international border that extends about 1,070 km and touches the major districts Barmer, Bikaner, Ganganagar and Jaisalmer. Altogether Rajasthan has 32 districts.
 The legislative assembly of Rajasthan has 200 seats. The state has representatives in the parliament also. The state is represented  by 10 members in Rajya Sabha and 25 members in the Lok Sabha. At present the state is divided into thirty three districts.

Monday, December 17, 2012

Straits and their Location in World


STRAIT-A strait or straits is a narrow, typically navigable channel of water that connects two larger, navigable bodies of water. It most commonly refers to a channel of water that lies between two land masses.

The Strait of Gibraltar
1 .Palk Strait : Between India and Sri Lanka
2. Duncan Passage : South Andaman and Little Andaman
3 .Ten Degree Channel : Little Andaman and Nicobar
4 .English Channel : Between England and France
5 .Florida Strait : Cuba and USA
6. Berring Strait : Russia and USA
7. Bass Strait : Between Australia and Tasmania
8. Strait of Gibralter : Between Spain and Morocco
9. Strait of Malaca : Between Malasiya and Sumatra (It also connects Indian Ocean and Pacific Ocean)
10. Barents Strait : Between Scandinavian countries and Artic Ocean
11. Dover Strait : separates Great Britain from France
12. Bosphorus Strait : Divides Europe from Asia
13. Strait of Magellan : Connects Atlantic Ocean and Pacific Ocean
14 .Davis Strait : between Greenland and Canada
15. Drake Passage : Separates South America and Antarctica

RAJASTHAN GK IN HINDI, RAJASTHAN GK 2013, GENERAL QUIZ


1. मिटटी से बना बांध है ? (RAS -96)
Ans:- पांचना बांध
2. बहुउद्देशीय नदी घटी परियोजनाओं कोआधुनिक भारत का मंदिरकिसने कहा ? (RAS pre. 99)
Ans:- पं. जवाहर लाल नेहरू ने
3. इन्द्रा गाँधी नहर परियोजना का उपनाम क्या है ?(RAS- 94)
Ans:- राजस्थान की मरू गंगा
4. बीसलपुर परियोजना का सम्बन्ध किस नदी से है ? (RAS- 99)
Ans:- बनास नदी से
5. इसराइल की कौनसी लोकप्रिय सिंचाई प्रणाली राजस्थान में प्रयोग में लाई जा रही है ? (B.Ed-95)
Ans:- बूंदबूंद टपकना सिंचाई प्रणाली
6. कडाना बांध किस नदी पर किस राज्य में स्थित है ?(B.Ed-2006)
Ans:- माही नदी पर गुजरात में
7. कुओं नलकूपों द्वारा सर्वाधिक सिचाई कहाँ होती है ?
Ans:- जयपुर
8. सोम-कमला-अम्बा सिंचाई परियोजना का सम्बन्ध किस जिले से है ? (RAS pre. 98)
Ans:- डूंगरपुर
9. छापी सिंचाई परियोजना का सम्बन्ध किस जिले से है ?(Police, 99)
Ans:- झालावाड
10. इन्द्रा गाँधी नहर परियोजना का निर्माण कार्य से प्रारंभ हुआ और इसका उद्गम है ? (RAS pre. 2007)
Ans:- सतलुज-व्यास नदी पर हरिके बांध से
11. इंदिरा गांधी नहर से किन जिलों को सिंचाई सुविधा प्राप्त हो रही है। (RPSC Ex.)
Ans:- बीकानेर, चूरू, गंगानगर, हनुमानगढ़, जैसलमेर, बाड़मेर जोधपुर
12. माही परियाजना जिन दो राज्यों की सयुंक्त योजना है, वे राज्य है ? (RPSC 3rd Gr-2004)
Ans:- राजस्थान- गुजरात
13. तालाबो द्वारा सर्वाधिक सिचाई कहाँ की जाती है ?
Ans:- भीलवाडा
14. नहरों द्वारा सिचाई कहाँ की जाती है ?
Ans:- गंगानगर
15. सरदार सरोवर परियोजना का सम्बन्ध किन राज्यों से है ? (Police, 2003)
Ans:- राजस्थान, गुजरात, महाराष्ट्र मध्य प्रदेश
16. राज्य की प्रथम सिंचाई परियोजना कौनसी है ?
Ans:- गंगनहर ( 1927 में गंगसिंह द्वारा स्थापित )
17. देश में सर्वाधिक सिचाई कंहाँ होती है ?
Ans:- राजस्थान के गंगानगर और हनुमान गढ़ जिलों में
18. जल भण्डारण क्षमता की दृष्टि से पश्चिमी राजस्थान का सबसे बड़ा बांध कौनसा है ? (RPSC 3rd Gr. 2004)
Ans:- जवाई बांध ( पाली-जोधपुर)
19. राजस्थान में सबसे लम्बी जल परिवहन सुरंग है ? (RPSC 3rd Gr- 2007)
Ans:- मानसी वाकल सुरंग
20. राजस्थान में चुलिया जल प्रपात किस नदी पर है ? (Police- 07, RPSC 3rd Gr- 09)
Ans:- चम्बल नदी पर