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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Enter the following transactions in simple cash book for November 2014.1. Cash in hand77502. paid to somu453. purchase goods6004. Received cash from pradeep9605. Cash sales5006. paid to kumar12007. paid rent600 |
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| 2. |
Assets are sold on credit are recorded in ……… |
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Answer» Assets are sold on credit are recorded in Journal Proper . |
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| 3. |
The Purchase day book contains (a) All Purchases (b) Cash Purchases (c) Credit Purchases |
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Answer» Correct answer is (c) Credit Purchases |
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| 4. |
Bank Balance – Debit balance in cash book .............. – Debit balance in pass book |
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Answer» Bank Balance – Debit balance in cash book Bank overdraft – Debit balance in pass book |
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| 5. |
Goods purchased on cash are recorded in the (a) Purchase book (b) Sales book (c) Cashbook |
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Answer» Correct answer is (c) Cashbook |
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| 6. |
Double column cash book records:- (a) All transactions (b) Cash and bank transaction (c) Only cash transaction (d) Only Credit transaction |
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Answer» Correct answer is (b) Cash and bank transaction. |
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| 7. |
……… records the page number of the original book of entry on which relevant transaction is recorded. |
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Answer» Journal Folio records the page number of the original book of entry on which relevant transaction is recorded. |
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| 8. |
The speed of light in media `M_1` and `M_2` are `1.5 xx 10^8 m//s and 2.0 xx 10^8 m//s` respectively. A ray of light enters from medium `M_1` to `M_2` at an incidence angle `i`. If the ray suffers total internal reflection, the value of `i` is.A. Equal to `sin^(-1)((2)/(3))`B. Equal to or les than `sin^(-1)((3)/(5))`C. Equal to or greater than `sin^(-1)((3)/(4))`D. Less than `sin^(-1)((2)/(3))` |
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Answer» Correct Answer - C Refractive index for medium `M_(1)` si `mu_(1)=(c)/(V_(1))=(3 xx10^(8))/(1.5 xx10^(8))=2` Refractive index for medium `M_(2)` is `mu_(2)=(c)/(V_(2))=(3 xx 10^(8))/(2.0 xx 10^(8)) =(3)/(2)` For total internal reflection `sin I ge sin C` where `i=` angle of incidence `C=` critical angle But `sin C=(mu_(2))/(mu_(1))` `sin ge (mu_(2))/(mu_(1)) ge (3//2)/(2) rArr i gt sin^(-1)((3)/(4))`. |
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| 9. |
A small collar of mass `m` is given an intial velocity of magnitude `v_(0)` on the horizontal circular track fabricated from a slender rod. If the coefficient of kinetic friction is `mu_(K)`, determine the distance travelled before the collar comes to rest. (Recognize that the friction force depends on the net normal force). A. `(r )/(mu_(k))ln[(v_(0)^(2)+sqrt(v_(0)^(4)+r^(2)g^(2)))/(rg)]`B. `(r )/(4mu_(k))ln[(v_(0)^(2)+sqrt(v_(0)^(4)+r^(2)g^(2)))/(rg)]`C. `(2r)/(mu_(k))ln[(v_(0)^(2)+sqrt(v_(0)^(4)+r^(2)g^(2)))/(rg)]`D. `(r)/(2mu_(k))ln[(v_(0)^(2)+sqrt(v_(0)^(4)+r^(2)g^(2)))/(rg)]` |
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Answer» `-muN=ma` `-musqrt((mv^(2))/(r )+(mg^(2)))=ma` `rArr a=-musqrt((v^(4))/(r^(2))+g^(2))` `rArr (dv)/(dx)(dx)/(dt)=-musqrt((v^(4))/(r^(2))+g^(2))` `rArr `Let `(v^(2))/(r )=trArr (2vdv)/(r )=dt` `rArr int((r )/(2)dt)/(sqrt(t^(2)+g^(2)))=-mu intdx` `rArr (r )/(2){ln(t+sqrt(t^(2)+g^(2)))}=-[mux]_(0)^(s)` `rArr (r )/(2) {ln(v^(2)/(r )+sqrt((v^(2))/(r^(2))+g^(2)))}_(v_(0))^(0)=-mu[x]_(0)^(s)` `rArr S=(r )/(2mu)ln[(v_(0)^(2)+sqrt(v_(0)^(4)+r^(2)g^(2)))/(rg)]` |
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| 10. |
Two motorboats, traveling at 5 and 10 km/h head directly towards each other. They begin at a distance of 20 km from each other. How far apart are they (in km) one minute before they collide?1. 1/122. 1/63. 1/34. 1/85. 1/4 |
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Answer» Correct Answer - Option 5 : 1/4 Given: Speed of the two boats are 5 km/h and 10 km/h respectively and distance of separation between them is 20 km. Concept: This is a typical problem of relative speed. As the boats are moving towards each other, the speed of the stream cancels out. Formula used: s = v × t Where, s = distance of the journey, v = speed, t = time taken Calculation: Relative speed of the boats = (10+5) km/h = 15 km/hr So, to calculate the separation between them just 1 minute before the collision, we have to calculate the relative distance traversed by them in 1 minute. They travel 15 km in 60 minutes. So, distance traversed in 1 minute = 15/60 = ¼ km So, distance between them 1 minute before collision = ¼ km |
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| 11. |
A body of mass 1 kg executes SHM which is given by ` y=6.0 cos (100t+(pi)/(4)) cm` What is the (i) amplitude of displacement (ii) frequency (iii) initial phase (iv) velocity (v) acceleration and (vi) maximum kinetic energy ?A. 3JB. 6JC. 9JD. 18J |
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Answer» Correct Answer - D |
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| 12. |
If the efficiency of an engine is 50% and its work output is 500 J then find input.A. 1000JB. 500 JC. 100JD. 250J |
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Answer» Correct Answer - B |
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| 13. |
A ball is thrown upwards with a speed u from a height h above the ground.The time taken by the ball to hit the ground isA. `sqrt2h//g`B. `sqrt(8h//g`C. `sqrt(u^(2)+2gh)/(g)`D. `(u)/(g)+sqrt(2h)/(g)` |
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Answer» Correct Answer - D |
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| 14. |
The correct order of increasing boiling poitns of compounds : Pentan-1-ol(I), Butan-1-ol(II), Butan-2-ol(III), Ethanol (Iv), Methanol (V), Porpan-1-ol(VI)isA. I lt II lt III lt IV lt V lt VIB. VI lt V lt IV lt III lt II lt IC. V lt IV lt VI lt III lt II lt ID. V lt IV lt VI lt II lt III lt I |
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Answer» Correct Answer - C More the branching lesser the b.pt. |
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| 15. |
A dolphin asks for HELP. A) assistance B) assistant C) support D) provision E) sponsor |
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Answer» Correct option is A) assistance |
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| 16. |
Find the synonymImportant A) complex B) secondary C) detailed D) significant |
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Answer» Correct option is D) significant |
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| 17. |
Edison’s idea was TO CHECK the mistakes of his son. A) to rise B) to develop C) to verify D) to close E) to renew |
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Answer» Correct option is C) to verify |
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| 18. |
a) Which are four conditions necessary for bacterial growth? b) How should waste water ,organic and inorganic waste disposed from the kitchen? |
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Answer» a) Four conditions necessary for bacterial growth are-
b) Disposal of waste water
Disposal of organic waste
Disposal of inorganic waste
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| 19. |
Hormone responsible for senescence in flowers A. Auxins B. Cytokinins C. Gibberleins D. Ethylene |
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Answer» D. Ethylene Ethylene Hormone responsible for senescence in flowers. |
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| 20. |
What is terrarium culture? |
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Answer» Terrarium culture It is a sophisticated technique of growing ornamental plants inside transparent glass containers in manner to make it a complete ecosystem. |
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| 21. |
Define floral preservatives. |
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Answer» Floral preservatives Floral preservatives refers to any substance which is capable of inhibiting, retarding or arresting the growth of microorganism thus helps in improving post harvest life and quality of flowers. They mainly comprised of sugars, germicides, ethylene inhibitors, growth regulators and some mineral salts. |
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| 22. |
In the following question, two statements are numbered as A and B. On solving these statements, we get quantities A and B respectively. Solve both quantities and choose the correct option.Quantity A: A utensil is made up of three metals (Steel, Zinc and Brass) in the ratio of 2 : 3 : 5.If the weight of utensil is 500 mg. Find the amount of brass used in the utensil.Quantity B: 25 mg1. Quantity A ≥ Quantity B2. Quantity A ≤ Quantity B3. Quantity A < Quantity B4. Quantity A > Quantity B5. Quantity A = Quantity B or No relation |
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Answer» Correct Answer - Option 4 : Quantity A > Quantity B Quantity A: Ratio of Steel, Zinc and Brass is 2 : 3 : 5. (Share of the item/sum of the ratio) × Total weight of the object ⇒ Sum of the ratio = 2 + 3 + 5 ⇒ 10 Amount of brass used = (5/10) × 500 ⇒ 250 mg. Quantity B: 25 mg ∴ Quantity A > Quantity B |
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| 23. |
What is role of mowing in lawn grasses? |
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Answer» Role of mowing in lawn grasses
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| 24. |
Sixty percent of the rats included in a particular experiment were female rats. If some of the rats died during the experiment and 30% of rats died were male, what was the ratio of the death rate among the male rats to the death rate among the female rats?1. 3 : 42. 9 : 143. 9 : 164. 6 : 7 |
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Answer» Correct Answer - Option 2 : 9 : 14 Given: Female rat in particular experiment = 60% Male rats in particular experiment = 40% Female rats died in experiment = 70% Male rats died in experiment = 30% Calculation: Let the number of rats be x The number of female rats = 60% of x = 0.6x Number of male rats = 40% of x = 0.4x Let the number of rats that died be y The number of female rats died = 70% of y = 0.7y Number of male rats died = 30% of y = 0.3y Death rate of male rats = \(\frac{0.3y}{0.4x}\) = \(\frac{3y}{4x}\) ----(I) Death rate of female rats = \(\frac{0.7y}{0.6x}\) = \(\frac{7y}{6x}\) ----(II) Equating (I) and (II) ⇒ \(\frac{3y}{4x}\) = \(\frac{7y}{6x}\) = 18xy : 28xy ∴ The ratio of the death rate of male to female rats is 9 : 14 |
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| 25. |
in triangle ABC angle B= 40 degree and angle C= 80 degree BO and CO are the bisector of angle B and angle C respectively find angle BOC |
| Answer» in triangle ABC angle B= 40 degree and angle C= 80 degree BO and CO are the bisector of angle B and angle C respectively find angle boc | |
| 26. |
In a theater, there are three types of seating arrangements viz. I, II and III. The number customers seating in I, II and III is in the ratio of 2 : 3 : 5. The ratio of ticket fare of a seat in arrangement I, II and III is 7 : 5 : 4. Total fare collected is Rs.24500 when theater is houseful. The ticket fare collected from arrangement I is approximately what percent of total fare collected from all arrangements?1. 29%2. 34%3. 20%4. 22%5. 27% |
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Answer» Correct Answer - Option 1 : 29% Given: Let number of customers in arrangements I, II and III be 2a, 3a and 5a respectively. Let the ticket fare of a seat of arrangement I, II and III be Rs.7b, Rs.5b and Rs.4b respectively. Calculation: ⇒ 2a × 7b + 3a × 5b + 5a × 4b = 24500 ⇒ ab = 500 The ticket fare collected from arrangement I = 2a × 7b = 14ab = 14 × 500 = Rs.7000 ∴ Required percentage = 7000/24500 × 100 = 28.57 ≈ 29%. |
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| 27. |
Identify the incorrect statement from among the following:1. Mathematical communication involves precise use of language.2. Conjectures do not have utility in constructing mathematical knowledge.3. Hypothesis have a role in construction of mathematical knowledge.4. The notion of argumentation is central to mathematics. |
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Answer» Correct Answer - Option 2 : Conjectures do not have utility in constructing mathematical knowledge. Mathematical Communication refers to the Communication by which learners discuss, share, analyze, and make their sense of Maths. It used to express mathematical thoughts and ideas. Communication in Mathematics develops the ability to organize, consolidate, and express mathematical thinking among the students. Note that:
Hence, Conjectures have utility in constructing mathematical knowledge. |
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| 28. |
The area of a square park is same as of a rectangular park . If the side of the square park is 60 m and the length of the rectangular park is 90 m . Find the breadth of the rectangular park. |
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Answer» Given: The side of the square park = 60 m The length of the rectangular park = 90 m According to the question, Area of square park = Area of rectangular park ⇒ side x side = length x breadth ⇒ 60 x 60 = 90 x breadth ⇒ breadth \(=\frac{60\times60}{90}\) = 40 m Thus, the breadth of the rectangular park is 40 m. |
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| 29. |
Which one of the following statements is true about 'axioms'?1. Axioms are the same as propositions.2. Axioms can be proved.3. Axioms are the same as theorems.4. Axioms are Mathematical statements which cannot be proved. |
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Answer» Correct Answer - Option 1 : Axioms are the same as propositions. Mathematics is a branch of science which deals with counting, calculating, and studying numbers, shapes, and structures. In Mathematics, mathematicians are concerned with arguments, instead of proofs. The truth of an argument can be acquired through two main processes i.e. Deduction and Induction.
An axiom:
NOTE: A theorem is a statement that has been proven by logical arguments based on axioms. Hence, we can conclude that Axioms are the same as propositions statement is true about 'axioms'. |
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| 30. |
Find mode of the data: 99, 100, 95, 100, 100, 60, 90 |
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Answer» Mode are defined as the number which have maximum number of frequency that is number which occurs maximum times. From the give data marks 100 is occurred three times as compared to others data. Hence, the mode of given data is = 100. Given data is 99, 100, 95, 100, 100, 60, 90. Since, 100 repeats for maximum times. So, the made of given data is 100. |
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| 31. |
Let `A=[(1,1,0),(0,1,0),(0,0,1)]`, and let l denote the `3 xx 3` identity matrix. Then `2A^(2)-A^(3)=……....`A. `A+1`B. `A-1`C. `l-A`D. A |
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Answer» Correct Answer - B `underset(Lrarr0)(Lt)[(x)/(sinx)]=1" and "underset(xrarr0)(Lt)[(sin^(-1)(x))/(x)]=1 " and "underset(xrarr0)(Lt)[(tan^(-1)x)/(x)]=0` |
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| 32. |
If `Delta_(1)=|(x,b,b),(a,x,b),(a,a,x)|" and "Delta_(2)=|(x,b),(a,x)|`, thenA. `Delta_(1)=3(Delta_(2))^(2)`B. `(d)/(dx)(Delta_(1))=3Delta_(2)`C. `(d)/(dx)(Delta_(1))=3Delta_(2)^(2)`D. `Delta_(1)=3Delta_(2)^(3//2)` |
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Answer» Correct Answer - D `a+ar+ar^(2)+ar^(3)+ar^(4)=40` `(1)/(a)+(1)/(ar)+(1)/(ar^(2))+(1)/(ar^(3))+(1)/(ar^(4))=10implies(1)/(a^(2)r^(4))(a+ar+ar^(2)+ar^(3)+ar^(4))=10impliesa^(2)r^(4)=4impliesar^(2)=pm2` `|S|=|a^(5).r^(10)|=|(pm2)^(5)|` |
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| 33. |
If 1-p is a root of the equation `x^(2)+px+1-p=0`, then its roots areA. `0,-1`B. `-1,1`C. `0,1`D. `-1,2` |
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Answer» Correct Answer - D `LHL = underset(xrarro^(-))(Lim)(x)/(ln(1+x)).[x]^(2)ln2=ln2` `RHL = underset(xrarr0^(+))(Lim)(ln(e^(x^(2))+2sqrt(x)))/(sqrt(x)((tansqrt(x))/(sqrt(x))))=underset(xrarr0^(+))(Lim)(lne^(x^(2))+ln(1+(2sqrt(x))/(e^(x^(2)))))/(sqrt(x))` `=underset(xrarr0^(+))(Lim)(x^(2))/(sqrt(x))+ln(1+(2sqrt(x))/(e^(x^(2))))/((2sqrt(x))/(e^(x^(2))))x(2)/(e^(x^(2)))=2impliesLHL ne RHL ` |
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| 34. |
Sum of the series `P=(1)/(2sqrt(1)+sqrt(2))+(1)/(3sqrt(2)+2sqrt(3))+.........+(1)/(100sqrt(99)+99sqrt(100))` isA. `(1)/(10)`B. `(3)/(10)`C. `(9)/(10)`D. `(1)/(2)` |
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Answer» Correct Answer - B Put `y=x+(3+5)/(2)=x+4` The equation becomes `(y-1)^(4)+(y+1)^(4)=16` `implies2{y^(4)+6y^(2)+1}=16 " "implies" "y^(4)+6y^(2)-7=0` `implies (y^(2)+7)(y^(2)-1)=0" "implies " "y^(2)=-7" or "y^(2)=1` `implies y=pmsqrt(7i)" or "y= pm1 " "implies " "x=-4pmsqrt(7i) " or " x=-4pm1=-5" or "-3`. Thus, the given equation has two real roots. |
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| 35. |
If `|w|=2`, then the set of points `x+iy=w-(1)/(w)` lie onA. CircleB. EllipseC. ParabolaD. Hyperbola |
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Answer» Correct Answer - C Eliminating b and c we get `a+(1)/(4-(a)/(a-1))=(7)/(3)impliesa=(5)/(3)" "thereforeb=(3)/(2)" and "c=(2)/(5)` |
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| 36. |
If a,b, c are in H.P. then `a-(b)/(2),(b)/(2),c-(b)/(2)` are inA. A.P.B. G.P.C. A.G.P.D. H.P. |
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Answer» Correct Answer - B The number of students answering at least r question incorrectly is `2^(n-r)`. `therefore` the number of students answering exactly `r(1lerlen-1)` question incorrectly is `2^(n-r)-2^(n-(r+1))` Also, the number of students answering all question wrongly is `2^(@)=1`. Thus, the total number of wrong answer is : `1(2^(n-1)-2^(n-2))+2(2^(n-2)-2^(n-3))+3(2^(n-3)-2^(n-4))+.......+(n-1)(2^(1)-2^(@))+n(2^(@))` `=2^(n-1)+2^(n-2)+.........+2^(@)=2^(n)-1` Now, `2^(n)-1=4095implies2^(n)=4096=2^(12)impliesn=12`. |
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| 37. |
Sum of the series `Sigma_(r=1)^(n) rlog((r+1)/(r))` isA. `log[((n+1)^(n))/(n!)]`B. `(log(n+1)^(n))/(n!)`C. `n!log(n+1)`D. None of these |
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Answer» Correct Answer - A Using `C_(1)rarrC_(1)+C_(2)+C_(3), " we get " Delta=2|(y+z,z,y),(z+x,z+x,x),(x+y,x,x+y)|` Using `C_(2)rarrC_(2)-C_(1),C_(3)rarrC_(3)-C_(1)`,we get `Delta=2|(y+z,-y,-z),(z+x,0,-z),(x+y,-y,0)|=2|(0,-y,-z),(x,0,-z),(x,-y,0)|" "["Using"C_(1)rarrC_(1)+C_(2)+C_(3)]` `=2xyz |(0,1,1),(1,0,1),(1,1,0)|=4xyz` `"Now "4xyz=12impliesxyz=3` The number 3 can be assigned to any of x,y,z. Therefore, the number of positive integral solution of `Delta=12` to 3. |
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| 38. |
The number of complex numbers z such that `|z-1|=|z+1|=|z-i|` is |
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Answer» Correct Answer - D `|a|b|c|d|` For the number to be divisible by 11, `a+c-(b+d)` should be a multiple of 11. `because a,b,c,d in{1,2,3,4}` `therefore a+c-b-d=0impliesa+c=b+d` `a+c` can vary from 2 to 8. `{:("Number of ways"=1xx1(a+c=2)),( " "=2xx2(a+c=3)),(" "=3xx3(a+c=4)),(" "=4xx4(a+c=5)),(" "=3xx3(a+c=6)),(" "=2xx2(a+c=7)),(" "=1xx1(a+c=8)):}` |
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| 39. |
If `(x+iy)^(1//3)=a+ib, " then " (x)/(a)+(y)/(b)` equalsA. `4(a^(2)-b^(2))`B. `2(a^(2)-b^(2))`C. `2(a^(2)+b^(2))`D. None of these |
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Answer» Correct Answer - C We know that `(vec(a)xxvec(b)).(vec(c )xxvec(d))=|(vec(a).vec(c),vec(a).vec(d)),(vec(b).vec(c ),vec(b).vec(d))|=|(lambda,4),(9,lambda)|=lambda^(2)-36` Since `vec(a)xxvec(b)` and `vec(c)xxvec(d)` are prependicular so `lambda = 6`. |
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| 40. |
If the line (x - 2)/3 = (y - 1)/-5 = (z + 2)/2 lies in the plane x + 3y - αz + b = β, then (α, β) is ______ .(a) (-5, 5) (b) (-6, 7) (c) (5, -5) (d) (6, -7) |
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Answer» The correct answer is : (b) (-6, 7) |
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| 41. |
Find the product (2/3x2y) x 3/5xy2.\(\frac 2{3x^2 y} \times \frac3{5xy^2} \) |
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Answer» \(\frac 2{3x^2 y} \times \frac3{5xy^2} = \frac6{15x^3 y^3} =\frac2{5x^3 y^3}\) |
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| 42. |
Expand \( (x+y+3)^{2} \) |
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Answer» x²+y²+9+2xy+6x+6y
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| 43. |
The geometry of [Ni(CO)4] is(A) tetrahedral(B) square planer(C) octahedral(D) none of these |
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Answer» Answer (B) square planer |
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| 44. |
You have to first go through the paragraph carefully and then select the answer of the related questions from the option given:Transition elements show varibale oxidation state. This is because their valence electrons are found in two different orbitals i.e. ns and (n-1)d. Up to +2 oxidation state ns electrons are involved but in higher oxidation states electrons of (n-1)d subshell are involved.The transition metal which shows highest oxidation state is(A) Mn(B) Pt(C) Fe(D) Ni |
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Answer» Answer (A) Mn |
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| 45. |
For a given complex [Co(NH3)5NO2]Cl2. Write its IUPAC name and Linkage isomer. |
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Answer» Pentaamminenitrito-N-Cobalt (III) chloride. [CO(NH3)5(ONO)]Cl2 |
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| 46. |
What is reverse osmosis? |
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Answer» Reverse osmosis- If external pressure greater than osmotic pressure applied on solution, the flow of solvent molecules can be made proceed from the solution towards pure solvent. This type of osmosis is termed as reverse osmosis. Reverse osmosis is used for the distilation of sea water for getting fresh drinking water. |
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| 47. |
Give an example of each of the following:(a) Gel(b) Aerosol |
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Answer» (a) Gel - Butter (b) Solid aerosol - smoke liquid aerosol - fog |
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| 48. |
Give the I.U.P.A.C. name of the complex salt K3[Fe(CN)6] |
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Answer» Potassium hexa cyano ferrate (II). |
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| 49. |
What is the composition of colloidion solution ? |
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Answer» (Hint : 4% solution of nitrocellulose in a mixture of alcohol and ether.) |
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| 50. |
In the extraction of Cu from its sulphide ore, the metal is formed by reduction of `Cu_(2)O` withA. `Cu_(2)S`B. `FeS`C. `CO`D. C |
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Answer» Correct Answer - A Bessemerisation |
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