Answer: C) 9 : 10 Explanation: The ratio of X and Y ages at present is 4:5.  Then, the ratio 20 years ago will not be more than the ratio at present. So, from the options 9:10 is not satifying => its ratio is 0.9 which is greater than presnt ratio of 0.8.

Answer: C) 6 m/h Explanation: let, speed of Ali=X mph and Faizer=Y mph Now, relative speed when Ali is walking int the same direction with Faizer= (X-Y)mphhence, according to question, 27/(X-Y)=9 ; solving X-Y=3; --- (1) Now relative speed when walking in the opposite direction= (X+Y) mphhence, according to question, 27/(X+y)=3; solving X+Y=9; --- (2) solving 1 and 2 we get X=6 and Y=3, where X is the speed of Ali.

Answer: A) 400 Explanation: Let the total number of pages in the book be 'x'. From given data, 2x/5 + 34x/100 + 52 + 52 = x => 40x + 34x + 10400 = 100x => 26x = 10400 => x = 400. Hence, total pages in the book are 400.

Answer: A) (1) Explanation: The error lies in part (1).  As the phrase 'as much as' needs to be replaced with 'much as I'. This is because we use 'as much as' for comparing two qualities or things. But here in the given sentence a contrast is given in the latter part of the sentence. So we need a conjunction like 'even though' 'although' etc... 'Much as I' also serves the same purpose.

Answer: C) 15 July Explanation: World Population day is an annual event, observed on July 11 every year, which seeks to raise awareness of global population issues.

Answer: A) Mukesh Ambani Explanation: Indian business magnate Mukesh Ambani topples Jack Ma as Asia’s richest person as he positions Reliance Industries to disrupt the e-commerce space in India.   The chairman of India’s refining-to-telecoms conglomerate, Ambani was estimated to be worth US$44.3 billion in July 2018 with the share price of Reliance Industries rising 1.6 per cent to a record 1,099.8 rupees (US$16.05), according to Bloomberg Billionaires Index.   Jack Ma’s wealth stood at US$44 billion at the close of trading on the sameday in the US, where the company is listed.

Answer: A) TRUE Explanation: Carbon monoxide is one of the major pollutant present in the world. The six most common pollutants include ozone, carbon monoxide, sulfur dioxide, lead, nitrogen oxides, and particulate matter.   Carbon monoxide is a common atmospheric pollutant. It is produced largely in combustion processes like in industries and in vehicles. It is a gas that cannot be seen nor smelled.

Answer: D) Gujarat Explanation: Kachchh district is the largest in India in terms of territorial extent, located in the state of Gujarat.The second largest district is Leh in Jammu & Kashmir.