All questions
- A chord of a circle of radius 20 cm subtends an angle of 90° at the centre. Area of a quadrant sector of the circle = (90/360) * (pi* 20*20) => 100 pi sq cm Area of corresponding right triangle = 1/2 * 20 * 20 = 200... 1
- In figure OABC is a quadrant of a circle of radius 7 cm. If OD = 4 cm, find the area of the shaded region. Answer in img please rotate 1
- In the figure, arcs and drawn by taking vertices A, B and C of an equilateral triangle of side 10 cm to Correct answer is 39.25 cm² Solution :: 1
- In the figure, find teh perimeter of the shaded region where. ADC, AEB and BFC are semi-circle Perimeter of shaded region is 13.2 cm Text Solution :: Diameter of semicircle AEB= 2.8 cm RADIUS OF SEMICIRCLE(AEB)= 2.8/2= 1.4 cm Diameter... 1
- class 10 maharashtra board previous year question papers Maharashtra SSC Model Question Paper 2021 PDF Links Maharashtra Board Class 10 all subjects sample paper is a fruitful resource, which invol... 1
- By selling 45 lemons for Rs 40, a man loses 20%. How many should he sell for Rs 24 to gain 20% in the transaction ? Let S.P. of 45 lemons be Rs. x. Then, 80 : 40 = 120 : x or x = 40×120over80 = 60 For Rs.60, lemons sold = 45 For Rs.24, lemons sold = 45/60×... 1
- What is the general solution of sin^2 x+ sin^2 2x=sin^2 3x? Answer: x = nπ/2 or x = nπ ± π/6 , where n in mathbbZ Use the identity sin²A - sin²B = sin(A+B)sin(A-B) . Rewrite the equation as sin²3x - s... 1
- CBSE Social Science Class 10 Term 1 Answer Key? https://bit.ly/31VjAaT 1
- 3y2 + 4ab + 7y2 + ab Answer: 10y² + 5ab Only like terms (terms with the same variables and powers) can be added. 3y² and 7y² are like terms: 3y² + 7y² = 10y² . 4... 1
- Van purchased a DVD player on sale. The original selling price was $154.30. The sale price was $127.92. the first step is find the amount of money you saved Step-by-step explanation: 154.30-127.92 = 26.38 26.38 /154.30 = 0.17097 =17.1% 1
- What is the value of 6(2b-4) when b =5 6(2b-4) = 12b- 24 now given , b=5 6(2b-4) =12*5-24 =60-24 =36 2
- With reference to solar power production in India, consider the following statements: (d) Neither 1 nor 2 2
- The first phase of translation is: a) Aminoacylation of tRNA b) Recognition of an anti-codon a) Aminoacylation of tRNA Explaination: In translation the first phase is activation of amino acids in the presence of ATP. The activated am... 1
- Dissolution of the synaptonemal complex occurs during: a) Diplotene b) Leptotene c) Pachytene d) Zygotene a) Diplotene Explaination:: Dissolution of the synaptonemal complex occurs at diplotene phase of prophase I in meiosis 1
- .Strobili or cones are found in: a) Marchantia b) Equisetum c) Salvinia d) Pteris b) Equisetum Explaination:: Strobilus is structure present on many land plant species consisting of sporangia bearing structure densely aggr... 1
- If the head of cockroach is removed, it may live for few days because: a) the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body. Explaination:: Nervo... 1
- The roots that originate from the base of the stem are c) Fibrous roots Explaination:: Roots that originate from the base of stem constitute the fibrous root system as seen in the monocots exampl... 1
- Name the plant growth regulators which upon spraying on sugarcane crop, increases the length of stem d) Gibberellin Explaination:: Gibberellin hormone regulates the growth, elongation of stem. It is able to promote the internode elongation b... 1
- Identify the wrong statement with reference to transport of oxygen. a) Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin a) Higher H+ conc. in alveoli favours the formation of oxyhaemoglobin Explaination:: The Oxygen dissociation curve is highly useful in study... 1
- The plant parts which consist of two generations one within the other b) (a) and (d) Explaination:: (a) Pollen grain inside the anther (2n). (d) Embryosac inside ovule female gametophyte (2n). 2
- Identify the wrong statement with reference to immunity : a) Active immunity is quick and gives full response a) Active immunity is quick and gives full response Explaination:: Active immunity is slow and takes time to give its full effective respons... 1
- Which of the following pairs is of unicellular algae ? a) Anabaena and volvox b) Chlorella and spirulina Explaination:: Chlorella and spirulina are unicellular algae, rich in proteins is used as food supplement even by... 1
- Identify the correct statement with regard to G1 phase (Gap I) of interphase a) Cell is metabolically active, grows but does not replicate its DNA a) Cell is metabolically active, grows but does not replicate its DNA Explaination:: G1 Phase is metabolically active stage of cell cycle. D... 1
- The number of substrate level phosphorylations in one turn of citric acid cycle is : a) Two b) Three d) One Explaination: During Krebs' or citric acid cycle, succinyl-CoA is acted upon by enzyme succinyl-CoA synthetase to form succinate (a 4... 1