Practice Question and Answer
8Q: 3.2% of 500 × 2. 4% of ? = 312 2070 05b5cc694e4d2b4197774c4cb
5b5cc694e4d2b4197774c4cb- 1812.5true
- 2829.75false
- 3749.85false
- 4799.5false
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Answer : 1. "812.5"
Explanation :
Answer: A) 812.5 Explanation: Given 3.2% of 500 × 2. 4% of ? = 312Then,3.2 x 500100 x 2.4 x ?100 = 31216 x 2.4x?100 = 3129.6 x ?25 = 3129.6 x ? = 7800? = 78009.6? = 812.5
Q: K is 4 times as fast as L and working together, they can complete a work in 24 days. In how many days can L alone complete the work ? 2069 05b5cc774e4d2b4197775003e
5b5cc774e4d2b4197775003e- 130 daystrue
- 240 daysfalse
- 3120 daysfalse
- 480 daysfalse
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Answer : 1. "30 days"
Explanation :
Answer: A) 30 days Explanation: Given K=4L -->K+L = 4L+L = 5L These 5L people can complete the work in 24 days, which means L alone can do the work in (24 x 5)=120 days. Hence, K alone can do the work in 120/4= 30 days.
Q: दयालुता के लिए पहली बार विश्व युवा सम्मेलन __________ में आयोजित किया गया था।
2069 05d64ed1a6460d4392ccfd1d6
5d64ed1a6460d4392ccfd1d6- 1चेन्नईfalse
- 2नई दिल्लीfalse
- 3हैदराबादtrue
- 4मुंबईfalse
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Answer : 3. "हैदराबाद"
Q: The reduction potential of hydrogen half-cell will be negative if :(1) PH2= 2 atm and [H+] = 2.0 M(2) PH2= 1 atm and [H+] = 2.0 M(3) PH2= 1 atm and [H+] = 1.0 M(4) PH2= 2 atm and [H+] = 1.0 M 2069 05b5cc783e4d2b41977750235
5b5cc783e4d2b41977750235- 1Option 1false
- 2Option 2false
- 3Option 3false
- 4Option 4true
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Answer : 4. "Option 4"
Explanation :
Answer: D) Option 4 Explanation: H+-e-→12H2 Apply Nernst equation E=0-0.0591logPH212H+ E=-0.0591log2121 Therefore E is Negative
Q: Two metallic plate of equal thickness and coefficient thermal conductivity K1 and K2 put together face to face. A common plate is constructed. What is equivalent K? 2069 05b5cc6bfe4d2b4197774d9e7
5b5cc6bfe4d2b4197774d9e7- 1K1k2/k1+k2false
- 22k1k2/k1+k2true
- 3K1+k2/k1k2false
- 4Nonefalse
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Answer : 2. "2k1k2/k1+k2"
Explanation :
Answer: B) 2k1k2/k1+k2 Explanation: We know that, The equivalent K = L1 + L2L1K1+L2K2 where L1 & L2 are plate1 & Plate2 thicknesses, K1 & K2 are coefficient thermal conductivity of plate1 & Plate2 respectively. But here L1 = L2 = L (say) Then K = L+L/(L/K1 + L/K2) = 2K1K2K1+K2
Q: पाँच लड़कियाँ उत्तर की ओर मुँह करके बैठी हैं। रेखा, शालिनी और नीतू के बीच है। पूजा, नीतू के ठीक दायें है और शालिनी, नेहा के ठीक दायें है। तो बीच में कौन बैठी है?
2069 0609f73ee1679a537e3a17c72
609f73ee1679a537e3a17c72- 1शालिनीfalse
- 2नीतूfalse
- 3रेखाtrue
- 4पूजाfalse
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Answer : 3. "रेखा"
Q: भीमबेतका किसके लिए प्रसिद्ध है ?
2069 05f73036a2d9d25248e0562dd
5f73036a2d9d25248e0562dd- 1खनिजfalse
- 2सोन नदी का उद्गम स्थलfalse
- 3गुफाओं के शैलचित्रtrue
- 4इनमें से कोई नहींfalse
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Answer : 3. "गुफाओं के शैलचित्र"
Q: If the labour cost 20% of the cost of production and raw material cost 10% of the cost of production and the price on which article is sold is 20% above the cost of production. If the price of labour is increased by 40% and the price of raw material increased by 20% and rest other expenditure of cost remain constant. The industry thus decide to increase the selling price by 10%. Find the new profit percent ? 2069 05b5cc6c7e4d2b4197774de78
5b5cc6c7e4d2b4197774de78- 118%false
- 220%true
- 322%false
- 424%false
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Answer : 2. "20%"
Explanation :
Answer: B) 20% Explanation: Let the Cost of Production of the article = 100 Then, Labour Cost = 20 Raw Material = 10 Other Expenditure = 100 - 10 – 20 = 70 Selling Price of the article = 120 After increasing Labour and Raw material cost by 40% & 20% respectively, New Labour cost = 28 New Raw material cost = 12 New Cost of Production = 70 + 28 + 12 = 110 Then, New SP = 110% of 120 = 120 x 110/100 = 132 => New Gain = 132 - 110 = 22 => New Profit % = 22 x 100/110 = 20%